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Withings Pulse O2 Review | 171 Data compared

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  • Avg. price in UK: ~£110
  • Avg. price in US: ~$120
  • Form factor: clip-on
  • Battery life: 14 days
  • Screen size: 1 inch

Withings Pulse O2 review. Compare 171 technical specifications and user reviews to see how it ranks among fitness trackers and if it is worth buying.

7.2

Overall score

What it is: An overall evaluation of the fitness tracker's quality, based on technical analyses and user reviews.

When it matters: When you need a quick reference to identify the best fitness trackers on the market.

Score components:

80.0%

7.2

Technical Score

20.0%

?

User score

Very good
7.2

Technical Score

What it is: An assessment of the fitness tracker's technical performance, covering eight key areas: health tracking, sports features, connectivity, display, battery, smart features, design, and app support.

When it matters: When you want to compare fitness trackers based on technical performance and available features.

Score components:

20.0%

7.5

Sports & Navigation

20.0%

7.0

Battery

18.0%

8.4

Health

18.0%

6.7

Display

8.0%

4.5

Smart Features

8.0%

8.6

App & Wellness

4.0%

7.2

Connectivity

4.0%

5.8

Design & Durability

Very good
?

User score

What it is: A rating that combines user reviews and the total number of reviews received by the fitness tracker.

When it matters: When you want to know how a fitness tracker performs in daily use and how reliable it remains over time according to user feedback.

Score components:

70.0%

?

User reviews

30.0%

?

Popularity

  • 3.0
    Swimming

    Score components:

    28.0%

    1.0

    ATM rating

    24.0%

    4.0

    Open-water swim mode

    18.0%

    1.0

    Waterproof depth rating

    15.0%

    4.0

    GPS

    15.0%

    6.5

    Battery life

  • 6.4
    Kids

    Score components:

    30.0%

    6.5

    Battery life

    25.0%

    10

    Weight

    20.0%

    1.0

    ATM rating

    15.0%

    5.3

    Screen size

    10.0%

    9.9

    Price

  • No image
No image

Best prices in UK

    N/A~ £110

Best rankings

?

Available: ranking among products currently available (including other versions of this product).
All: ranking among all products in the database.

Verdict

The Withings Pulse O2 is a versatile 8-gram fitness tracker featuring a 1.28 x 0.32-inch OLED touchscreen and a 3-axis accelerometer to monitor steps, elevation, distance, and calories. Its key characteristic is the rear optical sensor that measures both heart rate and blood oxygen (SpO2) levels via finger placement. Main pros include its dual-wear design (wristband or belt clip), a long 14-day battery life with micro-USB charging, and seamless Bluetooth syncing with the Health Mate app. However, it is not water-resistant, the screen can be difficult to read in direct sunlight, and checking vitals requires manually removing the device from its strap or clip.

Technical Specifications of Withings Pulse O2

Technical Score

What it is: An assessment of the fitness tracker's technical performance, covering eight key areas: health tracking, sports features, connectivity, display, battery, smart features, design, and app support.

When it matters: When you want to compare fitness trackers based on technical performance and available features.

Score components:

20.0%

?

Sports & Navigation

20.0%

?

Battery

18.0%

?

Health

18.0%

?

Display

8.0%

?

Smart Features

8.0%

?

App & Wellness

4.0%

?

Connectivity

4.0%

?

Design & Durability

7.2
Withings Pulse O2 has a technical score of 7.18 points, which is higher than 57.3% of fitness trackers.
User score

What it is: A rating that combines user reviews and the total number of reviews received by the fitness tracker.

When it matters: When you want to know how a fitness tracker performs in daily use and how reliable it remains over time according to user feedback.

Score components:

70.0%

0.0

User reviews

30.0%

1.0

Popularity

?
Popularity
What it is: An indicator based on the number of reviews received by the fitness tracker.
When it matters: When you prefer to buy a product chosen and reviewed by many other consumers.
1.0
Withings Pulse O2 has a popularity of 1 points, which is lower than 58.2% of products in this category.
Ratio quality/price

What it is: An indicator that combines the fitness tracker's overall rating with its cost.

When it matters: When you are looking for a fitness tracker with a good balance between quality and price.

Score components:

60.0%

7.2

Overall score

40.0%

9.9

Price

8.0
Withings Pulse O2 has a quality-to-price ratio of 8 points, which is higher than 49.8% of products in this category.
Heart rate monitor
What it is: Sensor that measures heart rate in real time.
When it matters: When you care about live heart-rate feedback during training or resting trends outside of workouts.

Importance: HIGH

yes
Withings Pulse O2 supports heart rate monitoring. 40.2% of fitness trackers support heart rate monitoring.
On-demand finger reading.
Resting heart rate
What it is: Measures heart rate while resting.
When it matters: When deeper insight into sleep quality, recovery, or overall readiness matters more than raw numbers alone.

Importance: MEDIUM

yes
Withings Pulse O2 supports Resting heart rate. 52% of fitness trackers support Resting heart rate.
Tracks resting heart rate.
Fast/slow heart rate alerts
What it is: Alerts for heart rates that are too fast or too slow.
When it matters: When you want the tracker to warn you about unusual changes instead of only logging them.

Importance: LOW

no
Withings Pulse O2 does not support high and low heart rate alerts. 33.7% of fitness trackers support high and low heart rate alerts.
Irregular heart rate alerts
What it is: Warns of irregular or abnormal heart rhythms.
When it matters: When you want the tracker to warn you about unusual changes instead of only logging them.

Importance: LOW

no
Withings Pulse O2 does not support irregular heart rate alerts. 11.5% of fitness trackers support irregular heart rate alerts.
Blood oxygen sensor
What it is: Sensor that measures blood oxygen saturation.
When it matters: When blood oxygen readings are part of the health picture you want from the device instead of relying on heart rate and step count alone.

Importance: MEDIUM

yes
Withings Pulse O2 has a blood oxygen sensor. 74.4% of fitness trackers have a blood oxygen sensor.
On-demand finger reading.
Show more
GPS
What it is: Satellite navigation capability for positioning and tracking.
When it matters: When you train outdoors and want pace, distance, and route tracking without depending completely on your phone.

Importance: LOW

no
Withings Pulse O2 does not have GPS. 11% of fitness trackers have GPS.
Satellite systems supported
What it is: States which satellite navigation systems the device can use for positioning.
When it matters: When you train outdoors and want stronger positioning, route guidance, and navigation independence from your phone.

Importance: LOW

no
Withings Pulse O2 supports no satellite systems which is less versatile than that of 12.2% of fitness trackers and the same as that of 87.8% of fitness trackers.
GNSS bands supported
What it is: Number and type of GNSS frequency bands supported.
When it matters: When you train outdoors and want stronger positioning, route guidance, and navigation independence from your phone.

Importance: LOW

no
Withings Pulse O2 does not support advanced GNSS bands. 8.9% of fitness trackers support advanced GNSS bands.
Galileo support
What it is: Supports Galileo satellite system.
When it matters: When you train outdoors and want stronger positioning, route guidance, and navigation independence from your phone.

Importance: LOW

no
Withings Pulse O2 does not support Galileo. 4.9% of fitness trackers support Galileo.
Acquires GPS faster
What it is: Shows whether the tracker includes features that help it lock onto satellite positioning more quickly at the start of an outdoor activity.
When it matters: When you train outdoors and want stronger positioning, route guidance, and navigation independence from your phone.

Importance: LOW

no
Withings Pulse O2 does not support faster GPS acquisition. 7.2% of fitness trackers support faster GPS acquisition.
Show more
Notifications
What it is: Delivers smartphone notifications on the watch.
When it matters: When getting calls, messages, and app alerts on your wrist saves you from checking your phone constantly.

Importance: MEDIUM

no
Withings Pulse O2 does not support notifications. 73% of fitness trackers support notifications.
Vibrating alerts
What it is: Provides vibration-based notifications and alerts.
When it matters: When staying reachable from your wrist helps you avoid checking your phone constantly.

Importance: LOW

no
Withings Pulse O2 does not support vibration alerts. 84.2% of fitness trackers support vibration alerts.
Call control
What it is: Allows control of phone calls from the device.
When it matters: When staying reachable from your wrist helps you avoid checking your phone constantly.

Importance: LOW

no
Withings Pulse O2 does not support call controls. 41.1% of fitness trackers support call controls.
Call answering
What it is: Allows answering calls directly from the device.
When it matters: When staying reachable from your wrist helps you avoid checking your phone constantly.

Importance: LOW

no
Withings Pulse O2 does not support call answering. 1% of fitness trackers support call answering.
Calendar sync
What it is: Syncs calendar events with the connected device.
When it matters: When staying reachable from your wrist helps you avoid checking your phone constantly.

Importance: LOW

no
Withings Pulse O2 does not support calendar sync. 19.9% of fitness trackers support calendar sync.
Show more
Activity reports
What it is: Generates summaries and insights from activity data.
When it matters: When you want the app to motivate you with goals, reports, coaching, or progress feedback over time.

Importance: LOW

yes
Withings Pulse O2 supports activity reports. 5.7% of fitness trackers support activity reports.
Goal setting
What it is: Allows setting personal fitness or activity goals.
When it matters: When you want the app to motivate you with goals, reports, coaching, or progress feedback over time.

Importance: LOW

yes
Withings Pulse O2 supports goal setting. 2.4% of fitness trackers support goal setting.
Achievements
What it is: Rewards progress and completed milestones.
When it matters: When you want the app to motivate you with goals, reports, coaching, or progress feedback over time.

Importance: LOW

yes
Withings Pulse O2 supports achievements. 24.3% of fitness trackers support achievements.
Inactivity alerts
What it is: Alerts when the user has been inactive for too long.
When it matters: When account rules, app costs, exports, or software flexibility affect whether the ecosystem suits you long term.

Importance: LOW

no
Withings Pulse O2 does not support inactivity alerts. 76.9% of fitness trackers support inactivity alerts.
Coaching
What it is: Provides guided training and workout advice.
When it matters: When you want the app to motivate you with goals, reports, coaching, or progress feedback over time.

Importance: LOW

no
Withings Pulse O2 does not support coaching. 33% of fitness trackers support coaching.
Show more
Bluetooth version
What it is: Version of Bluetooth supported by the device.
When it matters: When wireless stability, pairing quality, and long-term phone compatibility matter more than Bluetooth being a simple checkbox.

Importance: LOW

Good value: >=5.0

4.0
Withings Pulse O2 supports Bluetooth 4.0 which is newer than in 5.1% of fitness trackers and equal to that in 51.5% of fitness trackers.
Maximum Bluetooth range
What it is: States the maximum Bluetooth connection range supported under normal conditions.
When it matters: When compatibility with your phone, computer, accessories, or wireless setup affects how well the tracker fits into your ecosystem.

Importance: LOW

Good value: >=10 m

10 m
Withings Pulse O2 offers a Bluetooth range of 10 m which is higher than that of 14.6% of fitness trackers and equal to that of 69.2% of fitness trackers.
NFC
What it is: Supports near-field communication for contactless features.
When it matters: When compatibility with your phone, computer, accessories, or wireless setup affects how well the tracker fits into your ecosystem.

Importance: LOW

no
Withings Pulse O2 does not have NFC. 10.1% of fitness trackers have NFC.
Wi-Fi connectivity
What it is: Connects to wireless internet networks.
When it matters: When the tracker should sync, update, or download data directly without always routing everything through the phone.

Importance: LOW

no
Withings Pulse O2 does not support Wi-Fi. 1.8% of fitness trackers support Wi-Fi.
Wi-Fi version
What it is: Version of Wi-Fi standard supported.
When it matters: When compatibility with your phone, computer, accessories, or wireless setup affects how well the tracker fits into your ecosystem.

Importance: LOW

no
Withings Pulse O2 does not support modern Wi-Fi. 1% of fitness trackers support modern Wi-Fi.
no Wi-Fi support.
Show more
Battery life
What it is: Total time the battery lasts on a full charge.
When it matters: When the tracker needs to last through travel, sleep tracking, long workouts, or several days between charges.

Importance: HIGH

Good value: >5 days

14 days
Withings Pulse O2 offers a battery life of 14 days which is longer than that of 60.4% of fitness trackers and equal to that of 13.9% of fitness trackers.
Battery life with GPS on
What it is: Battery duration when GPS tracking is active.
When it matters: When you want fewer charging breaks during travel, longer workouts, sleep tracking, or continuous use.

Importance: LOW

Good value: >=8 hours

N/A
Battery life in training mode
What it is: Battery duration during active training sessions.
When it matters: When you want fewer charging breaks during travel, longer workouts, sleep tracking, or continuous use.

Importance: LOW

?
Battery life in power-saving mode
What it is: Battery duration when using power-saving mode.
When it matters: When you want fewer charging breaks during travel, longer workouts, sleep tracking, or continuous use.

Importance: LOW

N/A
Battery capacity
What it is: Energy storage capacity of the battery.
When it matters: When you want rough battery context behind the runtime claim instead of trusting the advertised hours alone.

Importance: MEDIUM

Good value: >=100 mAh

?
Show more
Display
What it is: Main interface showing information and metrics.
When it matters: When easier reading at a glance and better day-to-day screen comfort matter to you.

Importance: LOW

yes
Withings Pulse O2 has a display. 24.1% of fitness trackers have a display.
Built-in touch display.
Screen size
What it is: Physical size of the device’s display measured diagonally.
When it matters: When easier reading at a glance and better day-to-day screen comfort matter to you.

Importance: MEDIUM

1 inch
Withings Pulse O2 has a screen size of 1 inch which is smaller than that of 51.1% of fitness trackers and equal to that of 2.1% of fitness trackers.
Display type
What it is: Technology used for the screen, such as AMOLED or LCD.
When it matters: When display technology affects contrast, color quality, power efficiency, or how premium the screen feels.

Importance: MEDIUM

OLED
Withings Pulse O2 uses OLED display technology which is more advanced than that of 53% of fitness trackers and the same as that of 21.8% of fitness trackers.
Screen resolution
What it is: Total number of pixels displayed on the screen.
When it matters: When easier reading at a glance and better day-to-day screen comfort matter to you.

Importance: MEDIUM

128 x 32
Withings Pulse O2 has a screen resolution of 128x32 which is lower than that of 51.7% of fitness trackers and equal to that of 9.1% of fitness trackers.
Pixel density
What it is: Number of pixels per inch determining screen sharpness.
When it matters: When easier reading at a glance and better day-to-day screen comfort matter to you.

Importance: LOW

Good value: >=280 ppi

128 ppi
Withings Pulse O2 has a pixel density of 128 ppi which is lower than that of 96.1% of fitness trackers.
Calculated from published resolution and display size.
Show more
Form factor
What it is: Overall physical design and shape.
When it matters: When materials, shape, and build details affect comfort, durability, or how discreet the device feels.

Importance: LOW

clip-on
Hybrid design
What it is: Combines analog and digital display elements.
When it matters: When materials, shape, and build details affect comfort, durability, or how discreet the device feels.

Importance: LOW

no
Withings Pulse O2 does not support Hybrid design. 2.4% of fitness trackers support Hybrid design.
Designed for kids
What it is: Indicates whether the fitness tracker is explicitly designed for children, with child-focused sizing, branding, safety limits, or kid-oriented activity features.
When it matters: This matters when you want a tracker that is genuinely child-focused rather than just a smaller adult model.

Importance: LOW

no
Withings Pulse O2 is not designed for kids. 2.4% of fitness trackers are designed for kids.
No child-specific positioning found.
Replaceable watch band
What it is: Ability to replace the wristband with other styles.
When it matters: When strap comfort, fit, or the ability to swap bands matters for sport, style, or replacement.

Importance: LOW

yes
Withings Pulse O2 has a replaceable watch band. 24.4% of fitness trackers have a replaceable watch band.
Band width
What it is: Width of the strap where it connects to the watch.
When it matters: When strap comfort, fit, or the ability to swap bands matters for sport, style, or replacement.

Importance: LOW

N/A
Show more

Withings Pulse O2 vs the average fitness tracker

  • Blood oxygen monitoring
    Withings Pulse O2 has a blood oxygen sensor, while the average fitness tracker does not. 26% of fitness trackers have a blood oxygen sensor.
    On-demand finger reading.
    What it is: Sensor that measures blood oxygen saturation.
    When it matters: When blood oxygen readings are part of the health picture you want from the device instead of relying on heart rate and step count alone.

    Importance: MEDIUM

    Withings Pulse O2 has a blood oxygen sensor, while the average fitness tracker does not. 26% of fitness trackers have a blood oxygen sensor.
  • Always-on display
    Withings Pulse O2 has an always-on display, while the average fitness tracker does not. 25.7% of fitness trackers have an always-on display.
    What it is: Screen remains visible continuously without turning off.
    When it matters: When you want to check time or key stats instantly without waking the screen first.

    Importance: LOW

    Withings Pulse O2 has an always-on display, while the average fitness tracker does not. 25.7% of fitness trackers have an always-on display.
  • Lower resting heart rate
    Withings Pulse O2 supports Resting heart rate, while the average fitness tracker does not. 48.2% of fitness trackers support Resting heart rate.
    Tracks resting heart rate.
    What it is: Measures heart rate while resting.
    When it matters: When deeper insight into sleep quality, recovery, or overall readiness matters more than raw numbers alone.

    Importance: MEDIUM

    Withings Pulse O2 supports Resting heart rate, while the average fitness tracker does not. 48.2% of fitness trackers support Resting heart rate.
  • Touchscreen
    Withings Pulse O2 has a touchscreen, while the average fitness tracker does not. 43.8% of fitness trackers have a touchscreen.
    What it is: Ability of the display to recognize touch input.
    When it matters: When smooth touch response and quicker on-screen interaction matter during workouts or daily use.

    Importance: LOW

    Withings Pulse O2 has a touchscreen, while the average fitness tracker does not. 43.8% of fitness trackers have a touchscreen.
  • 4 days longer battery life
    Withings Pulse O2 has a higher battery life than the average fitness tracker (14 days vs 10 days). The average fitness tracker has 10 days of battery life.
    What it is: Total time the battery lasts on a full charge.
    When it matters: When the tracker needs to last through travel, sleep tracking, long workouts, or several days between charges.

    Importance: HIGH

    Good value: >5 days

    Withings Pulse O2 has a higher battery life than the average fitness tracker (14 days vs 10 days). The average fitness tracker has 10 days of battery life.14 days vs 10 days
  • Tracks elevation
    Withings Pulse O2 supports elevation tracking, while the average fitness tracker does not. 27.2% of fitness trackers support elevation tracking.
    What it is: Measures elevation gain and loss during activity.
    When it matters: When you train outdoors and want stronger positioning, route guidance, and navigation independence from your phone.

    Importance: LOW

    Withings Pulse O2 supports elevation tracking, while the average fitness tracker does not. 27.2% of fitness trackers support elevation tracking.
  • 68% lighter
    Withings Pulse O2 is lighter than the average fitness tracker (8 g vs 25 g). The average fitness tracker weighs 25 g.
    Module weight only.
    What it is: Weight of the device including strap.
    When it matters: When overall size, thickness, or weight affects comfort during all-day wear, sleep, or exercise.

    Importance: LOW

    Good value: <25 g

    Withings Pulse O2 is lighter than the average fitness tracker (8 g vs 25 g). The average fitness tracker weighs 25 g.8 g vs 25 g
  • Low power mode
    Withings Pulse O2 supports low power mode, while the average fitness tracker does not. 24.4% of fitness trackers support low power mode.
    Includes a power save mode.
    What it is: Operates in energy-saving mode.
    When it matters: When charging speed, charging method, or battery upkeep convenience matters to your routine.

    Importance: LOW

    Withings Pulse O2 supports low power mode, while the average fitness tracker does not. 24.4% of fitness trackers support low power mode.
  • Blood oxygen monitoring
    Withings Pulse O2 has a blood oxygen sensor, while the average fitness tracker does not. 26% of fitness trackers have a blood oxygen sensor.
  • Lower resting heart rate
    Withings Pulse O2 supports Resting heart rate, while the average fitness tracker does not. 48.2% of fitness trackers support Resting heart rate.
  • Tracks menstrual cycle
    Withings Pulse O2 supports menstrual cycle tracking, while the average fitness tracker does not. 41.7% of fitness trackers support menstrual cycle tracking.
  • Period notifications
    Withings Pulse O2 has period notifications, while the average fitness tracker does not. 32% of fitness trackers have period notifications.
  • Ovulation prediction
    Withings Pulse O2 predicts ovulation, while the average fitness tracker does not. 41.4% of fitness trackers predict ovulation.
  • Tracks elevation
    Withings Pulse O2 supports elevation tracking, while the average fitness tracker does not. 27.2% of fitness trackers support elevation tracking.
  • Built-in barometer
    Withings Pulse O2 has a barometer, while the average fitness tracker does not. 10.7% of fitness trackers have a barometer.
  • 4 days longer battery life
    Withings Pulse O2 has a higher battery life than the average fitness tracker (14 days vs 10 days). The average fitness tracker has 10 days of battery life.
  • Low power mode
    Withings Pulse O2 supports low power mode, while the average fitness tracker does not. 24.4% of fitness trackers support low power mode.
  • Always-on display
    Withings Pulse O2 has an always-on display, while the average fitness tracker does not. 25.7% of fitness trackers have an always-on display.
  • Touchscreen
    Withings Pulse O2 has a touchscreen, while the average fitness tracker does not. 43.8% of fitness trackers have a touchscreen.
  • 1 more physical buttons
    Withings Pulse O2 has a higher physical buttons than the average fitness tracker (1 vs 0). The average fitness tracker has 0 of physical buttons.
  • 68% lighter
    Withings Pulse O2 is lighter than the average fitness tracker (8 g vs 25 g). The average fitness tracker weighs 25 g.
  • 3 mm thinner design
    Withings Pulse O2 is thinner than the average fitness tracker (8 mm vs 11 mm). The average fitness tracker has a thickness of 11 mm.
  • Available on PC
    Withings Pulse O2 is available on PC, while the average fitness tracker is not. 16.9% of fitness trackers are available on PC.

Total
Health
Sports & Navigation
Battery
Display
Smart Features
Design & Durability
App & Wellness
  • No pace measurement
    Withings Pulse O2 does not support pace measurement, while the average fitness tracker does. 61.3% of fitness trackers support pace measurement.
  • No exercise tagging
    Withings Pulse O2 does not support exercise tagging, while the average fitness tracker does. 58.8% of fitness trackers support exercise tagging.
  • 0.5 hours longer charging time
    Withings Pulse O2 has a higher charging time than the average fitness tracker (2 hours vs 1.5 hours). The average fitness tracker needs 1.5 hours to charge.
  • Lower screen resolution
    Withings Pulse O2 has a lower screen resolution than the average fitness tracker (128x32 vs 194x368). The average fitness tracker has a screen resolution of 194x368.
  • 48.2% lower pixel density
    Withings Pulse O2 has a lower pixel density than the average fitness tracker (128 ppi vs 247 ppi). The average fitness tracker has a pixel density of 247 ppi.
    Calculated from published resolution and display size.
  • No notifications
    Withings Pulse O2 does not support notifications, while the average fitness tracker does. 72.6% of fitness trackers support notifications.
  • No vibrating alerts
    Withings Pulse O2 does not support vibration alerts, while the average fitness tracker does. 83.8% of fitness trackers support vibration alerts.
  • 50 m lower waterproof depth rating
    Withings Pulse O2 has a lower waterproof depth rating than the average fitness tracker (0 m vs 50 m). The average fitness tracker has a waterproof depth rating of 50 m.
    Not waterproof.
  • 5 ATM lower water resistance rating
    Withings Pulse O2 has a lower ATM rating than the average fitness tracker (0 ATM vs 5 ATM). The average fitness tracker has an ATM rating of 5 ATM.
    Not waterproof.
  • Low water resistance
    Withings Pulse O2 is not water-resistant, while the average fitness tracker is. 99% of fitness trackers are water-resistant.
  • 10 °C higher minimum operating temperature
    Withings Pulse O2 has a higher minimum operating temperature than the average fitness tracker (-10 °C vs 0 °C). The average fitness tracker supports a minimum operating temperature of 0 °C.
  • No inactivity alerts
    Withings Pulse O2 does not support inactivity alerts, while the average fitness tracker does. 76.5% of fitness trackers support inactivity alerts.
  • Lower screen resolution
    Withings Pulse O2 has a lower screen resolution than the average fitness tracker (128x32 vs 194x368). The average fitness tracker has a screen resolution of 194x368.
    What it is: Total number of pixels displayed on the screen.
    When it matters: When easier reading at a glance and better day-to-day screen comfort matter to you.

    Importance: MEDIUM

    Withings Pulse O2 has a lower screen resolution than the average fitness tracker (128x32 vs 194x368). The average fitness tracker has a screen resolution of 194x368.128x32 vs 194x368
  • No pace measurement
    Withings Pulse O2 does not support pace measurement, while the average fitness tracker does. 61.3% of fitness trackers support pace measurement.
    What it is: Measures running or walking speed.
    When it matters: When you want the tracker to capture more workouts and training details with less manual effort.

    Importance: MEDIUM

    Withings Pulse O2 does not support pace measurement, while the average fitness tracker does. 61.3% of fitness trackers support pace measurement.
  • No notifications
    Withings Pulse O2 does not support notifications, while the average fitness tracker does. 72.6% of fitness trackers support notifications.
    What it is: Delivers smartphone notifications on the watch.
    When it matters: When getting calls, messages, and app alerts on your wrist saves you from checking your phone constantly.

    Importance: MEDIUM

    Withings Pulse O2 does not support notifications, while the average fitness tracker does. 72.6% of fitness trackers support notifications.
  • No exercise tagging
    Withings Pulse O2 does not support exercise tagging, while the average fitness tracker does. 58.8% of fitness trackers support exercise tagging.
    What it is: Allows tagging or categorization of specific exercises.
    When it matters: When you want the tracker to capture more workouts and training details with less manual effort.

    Importance: LOW

    Withings Pulse O2 does not support exercise tagging, while the average fitness tracker does. 58.8% of fitness trackers support exercise tagging.
  • 0.5 hours longer charging time
    Withings Pulse O2 has a higher charging time than the average fitness tracker (2 hours vs 1.5 hours). The average fitness tracker needs 1.5 hours to charge.
    What it is: Time required for a full charge.
    When it matters: When short charging windows matter and you do not want the tracker off your wrist for too long.

    Importance: MEDIUM

    Withings Pulse O2 has a higher charging time than the average fitness tracker (2 hours vs 1.5 hours). The average fitness tracker needs 1.5 hours to charge.2 hours vs 1.5 hours
  • 50 m lower waterproof depth rating
    Withings Pulse O2 has a lower waterproof depth rating than the average fitness tracker (0 m vs 50 m). The average fitness tracker has a waterproof depth rating of 50 m.
    Not waterproof.
    What it is: Maximum depth the device can withstand underwater.
    When it matters: When you plan to swim, shower, dive, or use the tracker regularly around water.

    Importance: LOW

    Good value: >=50 m

    Withings Pulse O2 has a lower waterproof depth rating than the average fitness tracker (0 m vs 50 m). The average fitness tracker has a waterproof depth rating of 50 m.0 m vs 50 m
  • 48.2% lower pixel density
    Withings Pulse O2 has a lower pixel density than the average fitness tracker (128 ppi vs 247 ppi). The average fitness tracker has a pixel density of 247 ppi.
    Calculated from published resolution and display size.
    What it is: Number of pixels per inch determining screen sharpness.
    When it matters: When easier reading at a glance and better day-to-day screen comfort matter to you.

    Importance: LOW

    Good value: >=280 ppi

    Withings Pulse O2 has a lower pixel density than the average fitness tracker (128 ppi vs 247 ppi). The average fitness tracker has a pixel density of 247 ppi.128 ppi vs 247 ppi
  • No vibrating alerts
    Withings Pulse O2 does not support vibration alerts, while the average fitness tracker does. 83.8% of fitness trackers support vibration alerts.
    What it is: Provides vibration-based notifications and alerts.
    When it matters: When staying reachable from your wrist helps you avoid checking your phone constantly.

    Importance: LOW

    Withings Pulse O2 does not support vibration alerts, while the average fitness tracker does. 83.8% of fitness trackers support vibration alerts.
Total
Overall
Sports & Navigation
Battery
Display
Smart Features
Design & Durability
App & Wellness

Graphic comparison of Withings Pulse O2 and

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Third-party reviews

What customers like about Withings Pulse O2?

  • Versatile wearing options (can be worn on the wrist, clipped to a belt, or placed in a pocket)
  • Long battery life, typically lasting between 7 to 14 days on a single charge
  • Comprehensive health ecosystem with an excellent and detailed companion app (Health Mate)
  • Unique blood oxygen (SpO2) and heart rate monitoring for its price point
  • Lightweight and unobtrusive design, weighing only 8 grams

What customers dislike about Withings Pulse O2?

  • Not water-resistant, making it vulnerable to sweat, rain, or accidental submersion
  • OLED screen is virtually unreadable in direct sunlight or bright daylight
  • Heart rate monitoring is not continuous and requires removing the device from the wristband to use the sensor
  • Questionable build quality with soft materials that scuff easily
  • Occasional syncing issues and lack of compatibility with Windows or Mac

Expert reviews

D
digitaltrends.com
23/08/2019
Withings Pulse O2 review Live Science

Review Overview The Withings Pulse O2 is a modular, 1.65-inch fitness tracker that stands out by offering a unique onboard heart-rate and blood-oxygen saturation sensor alongside standard metric tracking. Priced at $120, its versatile design allows users to clip it to clothing or wear it as a watch using a variety of included straps, ranging from sporty silicone to business-friendly...Read more

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medium.com
22/12/2014
Withings Pulse O2 Review - the All-Encompassing Wearable

The Withings Pulse O2 is highlighted as a versatile, lightweight tracker that offers dual-wearing options via a wristband or clip, capable of tracking steps, elevation, and sleep with high-visibility outdoor displays. Specific pros include specialized LEDs for on-demand heart rate and SpO2 monitoring, along with smart, automatic differentiation between running and walking...Read more

I
ibtimes.com
11/12/2014
Withings O2 Pulse Review: A Decent Pedometer, When It Works

The International Business Times review highlights the Withings Pulse O2 as a versatile tracker featuring comprehensive data collection, including steps, SpO2, and sleep, paired with a highly praised, in-depth app ecosystem. However, the $99 device suffers from significant unreliability, with inconsistent heart rate readings and a flawed design that requires removing the tracker...Read more

H
hotpress.com
13/08/2014
Withings Pulse O2 - Technology Review

The Hotpress technology review highlights the Withings Pulse O2 as a slickly designed, life-logging fitness bracelet that separates itself from major competitors like the Jawbone UP and Fitbit Flex by offering a specialized built-in heart rate and blood oxygenation sensor. The critic, Pavel Barter, notes several major advantages, including its comprehensive tracking parameters that...Read more

C
coachweb.com
27/05/2014
Withings Pulse O2 review

The Withings Pulse O2 is a lightweight, budget-friendly tracker designed for casual users looking to increase their daily movement rather than serious athletes. On the positive side, it stands out by offering an integrated heart rate and blood oxygen (SpO2) sensor alongside general tracking data like steps, distance, and altitude climbed. It features an exceptional battery life that...Read more

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livescience.com
16/05/2014
Withings Pulse O2: Fitness Tracker Review

The Live Science review of the Withings Pulse O2 gives the fitness tracker a 6.8 out of 10 rating, highlighting its versatile design and advanced tracking metrics, including blood oxygen levels (SpO2) and heart rate. A major pro is its physical flexibility, as the 8-gram unit can be worn as a watch, clipped to a waistband, or placed in a pocket. Live Science However, the review...Read more

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trustedreviews.com
14/05/2014
Withings Pulse O2 Review

The Withings Pulse O2 builds upon its predecessor by incorporating blood oxygen (SpO2) tracking, elevation monitoring via an altimeter, and a versatile design that allows the core sensor to be used with a wrist strap or waistband clip. It benefits from a strong app ecosystem that seamlessly integrates data, alongside a vertical time-display option. However, the device is hindered by...Read more

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pcmag.com
30/04/2014
Withings Pulse O2 Review

The Withings Pulse O2 is a versatile activity tracker featuring a detailed app, long battery life, and comprehensive tracking for steps, elevation, sleep, and heart rate. It offers flexible usage with wristband and clip options, making it a strong choice for casual users focused on daily activity and health metrics. However, the device is limited by a non-continuous heart rate...Read more

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cnet.com
25/04/2014
Withings Pulse O2 review: Fitness band plus heart rate monitor checks blood oxygen, too

The Withings Pulse O2 is a compact fitness tracker that features a step counter, distance tracker, elevation climber, and calorie burner, alongside sleep and heart rate tracking. A major update over its predecessor is the addition of a soft rubber wristband and a firmware upgrade that allows the device to act as a pulse oximeter, measuring blood oxygen levels via a finger-sensor....Read more

G
gadgetsandwearables.com
20/01/2015
Review: Withings Pulse O2

The Withings Pulse O2 is a versatile activity tracker that monitors daily movement, elevation, heart rate, and sleep cycles. One of its standout features is the innovative blood oxygen (SpO2) sensor, which, alongside its heart rate monitor, offers vital sign readings on demand by pressing a finger to the back of the device. The tracker is praised for its long-lasting two-week...Read more

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fitness-tracker-test.info
01/03/2015
Withings Pulse Ox - Fitness Tracker Test

The Withings Pulse Ox is a versatile, lightweight tracker lauded for its multi-wear design—wristband, clip, or pocket—and long-lasting battery life. It excels in tracking steps, elevation, and providing SpO2 blood oxygen readings, all integrated with the comprehensive Withings Health Mate app. However, the device is hindered by manual, non-continuous heart rate and SpO2...Read more

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fitness-uhr.net
N/A
Withings Pulse Ox Review: The Unbeatably Lightweight Tracker

The Withings Pulse Ox is an exceptionally lightweight fitness tracker weighing just 8 grams, designed specifically for sports enthusiasts who value minimal weight. It features a 128 x 32 pixel OLED touch display and pairs with the Health Mate app to accurately track steps, distance, elevation profiles, calories burned, and comprehensive sleep cycles. A standout feature in this price...Read more

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macwelt.de
03/07/2014
Withings Pulse O2 Review: Fitness Tracker with Heart Rate Monitor

The Withings Pulse O2 is an everyday fitness tracker that monitors steps, sleep, heart rate, and blood oxygen levels ( 𝑂 2 𝑂 2 ) using a built-in photodynamical sensor on the back of the device. It can be worn in a pocket or on the wrist using one of three provided bands (black leather, blue rubber, or black rubber). The device features a basic touch screen and a single button for...Read more

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C
chip.de
07/04/2015
Withings Pulse O2 (Fitness Tracker) Review

For users looking for alternatives, the Samsung Gear Fit SM-R350 is recommended as a cheaper, more precise, and better-equipped option, though it is restricted to Android devices. Apple users are directed toward the Garmin Vivosmart as a comparable alternative. Overall, the tracker stands out for its measurement accuracy but falls short regarding modern lifestyle features and...Read more

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pcwelt.de
08/07/2014
Withings Pulse O2 Review: Fitness Tracker with Heart Rate Monitor

The Withings Pulse O2 is an everyday fitness tracker that monitors steps, sleep, pulse, and blood oxygen levels (SpO2) using a built-in photoxymeter sensor on the back of the device. It is an iterative update over its predecessor, adding the blood oxygen feature via firmware and including new wristbands that allow users to wear the tracker like a traditional watch. In terms of...Read more

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L
lesnumeriques.com
17/05/2014
Pulse Ox Review: The tracker gets a fresh new look", "Pulse Ox Test: The tracker gets a youthful upgrade

The Withings Pulse Ox is a compact activity tracker that builds upon its predecessor by introducing blood oxygen saturation ( SpO 2 S p O 2 ) monitoring, automatic sleep-to-day mode transitioning, and Bluetooth 4.0 data synchronization. Weighing just 8 grams, the device is highly versatile and can be worn either clipped to clothing or on the wrist using the included 18mm rubber...Read more

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medium.com
27/06/2017
A Year of Walking with the Withings Pulse O2

In a one-year review of the Withings Pulse O2, Loïc Vernet highlights the device's success in fostering a consistent, gamified walking habit, aided by an intuitive app and accurate step tracking that helped him achieve 52,000 steps in a single day. The tracker is praised for its versatile, multi-functional ecosystem, which tracks heart rate, SpO2, and sleep, along with convenient...Read more

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M
montrefitness.com
[Date non précisée]
Withings Pulse Ox Presentation, Test, and Review

The Withings Pulse Ox is a versatile, lightweight activity tracker featuring a modular design for wearing on the wrist, belt, or in a pocket, offering excellent pedometer, elevation, and sleep tracking capabilities via the Health Mate app. Its key, budget-friendly feature is on-demand, accurate pulse oximetry ( 𝑆 𝑝 𝑂 2 𝑆 𝑝 𝑂 2 ) and heart rate monitoring, though this requires...Read more

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C
cardio-frequencemetre.fr
[Date non précisée]
Withings Pulse Ox heart rate monitor: our full review

The Withings Pulse Ox is a versatile 43mm x 22mm x 8mm health tracker designed to monitor physical performance and general wellness. It provides real-time data on steps, distance, elevation, and calories, while also tracking nighttime sleep cycles. Its standout physical advantage is its highly adaptable form factor, allowing users to wear it as a wristband watch, clip it onto...Read more

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frandroid.com
22/06/2014
Getting started with the new Withings Pulse O2

The Withings Pulse O2 is an updated activity tracker that introduces blood oxygen saturation ( 𝑆 𝑝 𝑂 2 𝑆 𝑝 𝑂 2 ) measurements and a new wristband accessory, allowing for 24/7 continuous wear. The device retains the prominent strengths of its first-generation predecessor, notably an exceptionally lightweight design weighing just 8 grams, intuitive ergonomics, and a long battery...Read more

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E
endomorfun.fr
04/12/2013
Withings Pulse and Pulse O2, the activity tracker for athletes

The Withings Pulse (and its updated Pulse O2 version) is a compact, lightweight activity tracker designed for both sedentary individuals looking to improve their health and active runners looking to track off-the-clock recovery. Operating within the Withings ecosystem via the Health Mate app, the device utilizes an OLED touchscreen and Bluetooth Low Energy to automatically sync data...Read more

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U
unmondedaventures.fr
26/07/2014
A week with my Pulse O2, the mini activity tracker from Withings", "A week with my Pulse O2, Withings' mini activity tracker

The Withings Pulse O2 is a lightweight, versatile health tracker capable of monitoring daily activities (steps, elevation, calories, and distance), sleep duration and quality, heart rate, and blood oxygen levels (SpO2). During a one-week user trial, the device seamlessly integrated into daily routines, tracking metrics from a standard workday commute where it motivated the reviewer...Read more

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S
stuffi.fr
05/08/2014
Review of the Pulse O2, the Withings fitness tracker.

of the Withings Pulse O2 The Withings Pulse O2 is a lightweight fitness tracker priced at €119.90 that doubles as a watch replacement and seamlessly tracks steps, elevation, distance, and calories burned. A major standout feature is its ability to automatically detect when the user wakes up, removing the hassle of manually turning off the sleep tracking mode. The companion Health...Read more

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X
xataka.com
12/07/2013
Withings Pulse review

The Withings Pulse is a lightweight, 8-gram personal fitness tracker designed to be worn on a belt or pocket using a silicone clip, directly competing with devices like the Fitbit One. Its standout pros include a built-in optical heart rate sensor on the back, a 128 x 32 pixel OLED touchscreen that allows users to view a 14-day data history without needing a phone, and a solid 9 to...Read more

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D
dday.it
22/07/2014
Getting beach-ready with the Withings Pulse O2 and Smart Body Analyzer", "Getting in swimsuit shape with the Withings Pulse O2 and Smart Body Analyzer

This review assesses the Withings health ecosystem by evaluating the Pulse O2 fitness tracker (€119.95) and the Smart Body Analyzer smart scale (€149.95), both driven by the consolidated Health Mate platform. The Pulse O2 functions effectively as a lightweight, 15-day battery-powered pedometer and sleep monitor, featuring an integrated optical sensor to capture heart rate and blood...Read more

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I
id.nl
02/08/2013
My Month with the Withings Pulse

The ID.nl review of the Withings Pulse highlights its compact, portable design, featuring a durable build, an interactive OLED screen, and a rear-mounted heart rate monitor that allows for tracking daily activity and sleep, alongside a functional companion app. Despite the strong functionality, the reviewer notes significant durability issues, including immediate scratches on the...Read more

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S
smarthealth.live
19/03/2014
SmartHealth Review: Withings Pulse

The Withings Pulse is a lightweight, budget-friendly activity tracker priced at €99 that stands out for its compact size, weighing just 8 grams, and its versatile pocket-or-clip form factor. A major strength of the device is its two-week battery life and its sharp OLED touchscreen, which allows users to directly browse through 10 days of historical activity data—a rare standalone...Read more

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T
tweakers.net
16/01/2016
Withings Pulse Oₓ Smart Activity tracker Zwart Zwart - Gebruikersreview Zou je meer informatie willen over de specifieke zuurstofmeting (SpO2) functie...

This Tweakers product review covers the user's brief and highly critical experience with the Withings Pulse Oₓ Smart Activity Tracker. The reviewer initially had high expectations due to the tracker's attractive, beautiful design and its highly affordable price point, especially considering it featured a built-in oxygen saturation (SpO2) monitor. However, these two aspects—design...Read more

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S
smarthealth.live
18/11/2013
SmartHealth Buying Guide: Withings Pulse Ox Review

The Withings Pulse Ox is a versatile activity tracker priced at €119,95 that can be worn in a pocket, as a wristband, or clipped to a pocket. Overday, it accurately tracks steps, distance, calories burned, and unique metrics like elevation and stair climbing. At night, it monitors sleep duration and offers detailed insights into sleep stages that surpass many competing trackers. A...Read more

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