Withings ScanWatch 42mm Review | 171 Data compared

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  • Avg. price in UK: ~£310
  • Avg. price in US: ~$300
  • Form factor: watch
  • Battery life: 30 days
  • Screen size: 0.54 inch

Withings ScanWatch 42mm review. Compare 171 technical specifications and user reviews to see how it ranks among fitness trackers and if it is worth buying.

8.2

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%

8.0

Technical Score

20.0%

8.9

User score

Excellent
8.0

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%

8.6

Sports & Navigation

20.0%

8.4

Battery

18.0%

9.1

Health

18.0%

5.6

Display

8.0%

8.1

Smart Features

8.0%

9.4

App & Wellness

4.0%

7.2

Connectivity

4.0%

6.9

Design & Durability

Excellent
8.9

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%

8.4

User reviews

30.0%

10

Popularity

User score:
United Kingdom
amazon
4.2
(4537)
amazon
4.2
(4423)

(Reviews last updated: June 2026)

Excellent
  • 7.7
    Swimming

    Score components:

    28.0%

    10

    ATM rating

    24.0%

    4.0

    Open-water swim mode

    18.0%

    10

    Waterproof depth rating

    15.0%

    4.0

    GPS

    15.0%

    10

    Battery life

  • 6.3
    Kids

    Score components:

    30.0%

    10

    Battery life

    25.0%

    1.0

    Weight

    20.0%

    10

    ATM rating

    15.0%

    1.0

    Screen size

    10.0%

    8.9

    Price

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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 ScanWatch 42mm is a premium hybrid smartwatch featuring a 42mm stainless steel case (13.7mm thickness), a scratch-resistant sapphire glass cover, and 5 ATM (50m) water resistance. It integrates a 13mm PMOLED sub-display for notifications and a bottom sub-dial for real-time activity tracking. Its core health features include a medical-grade ECG for AFib detection, an SpO2 sensor for blood oxygen levels, and an altimeter for measuring floors climbed. Main pros include its exceptional 30-day battery life, professional analog aesthetic, and comprehensive health monitoring. However, notable cons include the lack of built-in GPS (it requires a smartphone connection for maps), limited smartwatch functionality such as the inability to answer calls or control music, and a small monochrome screen that can be difficult to read.

Technical Specifications of Withings ScanWatch 42mm

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%

8.6

Sports & Navigation

20.0%

8.4

Battery

18.0%

9.1

Health

18.0%

5.6

Display

8.0%

8.1

Smart Features

8.0%

9.4

App & Wellness

4.0%

7.2

Connectivity

4.0%

6.9

Design & Durability

8.0
Withings ScanWatch 42mm has a technical score of 8 points, which is higher than 85.5% 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%

8.4

User reviews

30.0%

10

Popularity

User score:
United Kingdom
amazon
4.2
(4537)
amazon
4.2
(4423)

(Reviews last updated: June 2026)

8.9
Withings ScanWatch 42mm has a user score of 8.88 points, which is higher than 78.9% of fitness trackers.
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.
10
Withings ScanWatch 42mm has a popularity of 10 points, which is higher than 60.1% 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%

8.2

Overall score

40.0%

8.9

Price

8.4
Withings ScanWatch 42mm has a quality-to-price ratio of 8.4 points, which is higher than 70% 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 ScanWatch 42mm supports heart rate monitoring. 40.2% of fitness trackers support heart rate monitoring.
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 ScanWatch 42mm supports Resting heart rate. 52% of fitness trackers support 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

yes
Withings ScanWatch 42mm supports high and low heart rate alerts. 66.8% 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

yes
Withings ScanWatch 42mm supports irregular heart rate alerts. 89% of fitness trackers support irregular heart rate alerts.
AFib 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 ScanWatch 42mm has a blood oxygen sensor. 74.4% of fitness trackers have a blood oxygen sensor.
Wrist-based monitoring.
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 ScanWatch 42mm 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 ScanWatch 42mm 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 ScanWatch 42mm 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 ScanWatch 42mm 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 ScanWatch 42mm 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

yes
Withings ScanWatch 42mm supports notifications. 27.5% 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

yes
Withings ScanWatch 42mm supports vibration alerts. 16.3% 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 ScanWatch 42mm 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 ScanWatch 42mm 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 ScanWatch 42mm 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 ScanWatch 42mm 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 ScanWatch 42mm supports goal setting. 2.4% of fitness trackers support goal setting.
Daily step goal is shown on the watch.
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 ScanWatch 42mm 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

yes
Withings ScanWatch 42mm supports inactivity alerts. 23.7% of fitness trackers support inactivity alerts.
Move reminders supported.
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

yes
Withings ScanWatch 42mm supports coaching. 67.5% of fitness trackers support coaching.
Via Withings+ in the app.
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 ScanWatch 42mm 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 ScanWatch 42mm 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 ScanWatch 42mm 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 ScanWatch 42mm 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 ScanWatch 42mm does not support modern Wi-Fi. 1% of fitness trackers support modern Wi-Fi.
no Wi-Fi support.
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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

30 days
Withings ScanWatch 42mm offers a battery life of 30 days which is longer than that of 85.6% of fitness trackers and equal to that of 0.5% 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

20 h
Withings ScanWatch 42mm offers a power-saving battery life of 20 h which is longer than that of 37.5% of fitness trackers and equal to that of 25% of fitness trackers.
Additional days in power reserve.
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

140 mAh
Withings ScanWatch 42mm has a battery capacity of 140 mAh which is higher than that of 59.2% of fitness trackers and equal to that of 1.4% of fitness trackers.
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 ScanWatch 42mm has a display. 24.1% of fitness trackers have a 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

0.54 inch
Withings ScanWatch 42mm has a screen size of 0.54 inch which is smaller than that of 95.8% of fitness trackers.
Digital sub-display only.
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

PMOLED
Withings ScanWatch 42mm uses PMOLED display technology which is less advanced than that of 53.5% of fitness trackers and the same as that of 7.4% 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

116 x 80
Withings ScanWatch 42mm has a screen resolution of 116x80 which is higher than that of 56.8% 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

261 ppi
Withings ScanWatch 42mm has a pixel density of 261 ppi which is higher than that of 52% 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

watch
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

yes
Withings ScanWatch 42mm supports Hybrid design. 98.1% of fitness trackers support Hybrid design.
Analog face with integrated OLED screen.
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 ScanWatch 42mm 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 ScanWatch 42mm has a replaceable watch band. 24.4% of fitness trackers have a replaceable watch band.
Quick-release band system.
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

20 mm
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Withings ScanWatch 42mm vs the average fitness tracker

  • 20 days longer battery life
    Withings ScanWatch 42mm has a higher battery life than the average fitness tracker (30 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 ScanWatch 42mm has a higher battery life than the average fitness tracker (30 days vs 10 days). The average fitness tracker has 10 days of battery life.30 days vs 10 days
  • Blood oxygen monitoring
    Withings ScanWatch 42mm has a blood oxygen sensor, while the average fitness tracker does not. 26% of fitness trackers have a blood oxygen sensor.
    Wrist-based monitoring.
    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 ScanWatch 42mm 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 ScanWatch 42mm supports Resting heart rate, while the average fitness tracker does not. 48.2% of fitness trackers support 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 ScanWatch 42mm supports Resting heart rate, while the average fitness tracker does not. 48.2% of fitness trackers support Resting heart rate.
  • Smart alarm
    Withings ScanWatch 42mm supports a smart alarm, while the average fitness tracker does not. 28.1% of fitness trackers support a smart alarm.
    What it is: Alarm that adjusts wake-up time based on sleep cycle.
    When it matters: When you want more discreet or more context-aware alerts than a standard alarm gives you.

    Importance: LOW

    Withings ScanWatch 42mm supports a smart alarm, while the average fitness tracker does not. 28.1% of fitness trackers support a smart alarm.
  • Heart rate alerts
    Withings ScanWatch 42mm supports high and low heart rate alerts, while the average fitness tracker does not. 33.5% of fitness trackers support high and low 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

    Withings ScanWatch 42mm supports high and low heart rate alerts, while the average fitness tracker does not. 33.5% of fitness trackers support high and low heart rate alerts.
  • Tracks respiration rate
    Withings ScanWatch 42mm supports respiratory rate tracking, while the average fitness tracker does not. 13.2% of fitness trackers support respiratory rate tracking.
    Overnight only.
    What it is: Monitors breathing rate over time.
    When it matters: When you want the tracker to monitor this specific health metric instead of only basic activity data.

    Importance: LOW

    Withings ScanWatch 42mm supports respiratory rate tracking, while the average fitness tracker does not. 13.2% of fitness trackers support respiratory rate tracking.
  • Coaching features
    Withings ScanWatch 42mm supports coaching, while the average fitness tracker does not. 32.8% of fitness trackers support coaching.
    Via Withings+ in the app.
    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

    Withings ScanWatch 42mm supports coaching, while the average fitness tracker does not. 32.8% of fitness trackers support coaching.
  • Tracks elevation
    Withings ScanWatch 42mm supports elevation tracking, while the average fitness tracker does not. 27.2% of fitness trackers support elevation tracking.
    Floors climbed via altimeter
    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 ScanWatch 42mm supports elevation tracking, while the average fitness tracker does not. 27.2% of fitness trackers support elevation tracking.
  • Blood oxygen monitoring
    Withings ScanWatch 42mm 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 ScanWatch 42mm supports Resting heart rate, while the average fitness tracker does not. 48.2% of fitness trackers support Resting heart rate.
  • Heart rate alerts
    Withings ScanWatch 42mm supports high and low heart rate alerts, while the average fitness tracker does not. 33.5% of fitness trackers support high and low heart rate alerts.
  • Tracks respiration rate
    Withings ScanWatch 42mm supports respiratory rate tracking, while the average fitness tracker does not. 13.2% of fitness trackers support respiratory rate tracking.
  • Irregular heart rate alerts
    Withings ScanWatch 42mm supports irregular heart rate alerts, while the average fitness tracker does not. 11.5% of fitness trackers support irregular heart rate alerts.
  • Tracks menstrual cycle
    Withings ScanWatch 42mm supports menstrual cycle tracking, while the average fitness tracker does not. 41.7% of fitness trackers support menstrual cycle tracking.
  • Period notifications
    Withings ScanWatch 42mm has period notifications, while the average fitness tracker does not. 32% of fitness trackers have period notifications.
  • ECG support
    Withings ScanWatch 42mm supports ECG, while the average fitness tracker does not. 5.7% of fitness trackers support ECG.
  • Fertile window notifications
    Withings ScanWatch 42mm displays fertile window notifications, while the average fitness tracker does not. 24.4% of fitness trackers display fertile window notifications.
  • Cycle start prediction
    Withings ScanWatch 42mm predicts the start date, while the average fitness tracker does not. 42.2% of fitness trackers predict the start date.
  • ECG lead type
    Withings ScanWatch 42mm supports advanced ECG leads, while the average fitness tracker does not. 5.7% of fitness trackers support advanced ECG leads.
  • Tracks elevation
    Withings ScanWatch 42mm supports elevation tracking, while the average fitness tracker does not. 27.2% of fitness trackers support elevation tracking.
  • Built-in barometer
    Withings ScanWatch 42mm has a barometer, while the average fitness tracker does not. 10.7% of fitness trackers have a barometer.
  • Built-in route tracker
    Withings ScanWatch 42mm supports route tracking, while the average fitness tracker does not. 49.8% of fitness trackers support route tracking.
  • 20 days longer battery life
    Withings ScanWatch 42mm has a higher battery life than the average fitness tracker (30 days vs 10 days). The average fitness tracker has 10 days of battery life.
  • Low power mode
    Withings ScanWatch 42mm supports low power mode, while the average fitness tracker does not. 24.4% of fitness trackers support low power mode.
  • 27.3% larger battery capacity
    Withings ScanWatch 42mm has a higher battery capacity than the average fitness tracker (140 mAh vs 110 mAh). The average fitness tracker has 110 mAh of battery capacity.
  • Durable display glass
    Withings ScanWatch 42mm uses more durable display glass than the average fitness tracker (sapphire vs glass). The average fitness tracker uses glass display glass.
  • Ambient light sensor
    Withings ScanWatch 42mm has an ambient light sensor, while the average fitness tracker does not. 15.8% of fitness trackers have an ambient light sensor.
  • Sapphire glass display
    Withings ScanWatch 42mm uses a sapphire glass display, while the average fitness tracker does not. 1.4% of fitness trackers use a sapphire glass display.
  • Smart alarm
    Withings ScanWatch 42mm supports a smart alarm, while the average fitness tracker does not. 28.1% of fitness trackers support a smart alarm.
  • Rotating crown
    Withings ScanWatch 42mm has a rotating crown, while the average fitness tracker does not. 0.5% of fitness trackers have a rotating crown.
  • 1 more physical buttons
    Withings ScanWatch 42mm has a higher physical buttons than the average fitness tracker (1 vs 0). The average fitness tracker has 0 of physical buttons.
  • Gesture control
    Withings ScanWatch 42mm supports gesture controls, while the average fitness tracker does not. 40.8% of fitness trackers support gesture controls.
  • Hybrid design
    Withings ScanWatch 42mm supports Hybrid design, while the average fitness tracker does not. 2.3% of fitness trackers support Hybrid design.
  • Coaching features
    Withings ScanWatch 42mm supports coaching, while the average fitness tracker does not. 32.8% of fitness trackers support coaching.
  • Available on PC
    Withings ScanWatch 42mm is available on PC, while the average fitness tracker is not. 16.9% of fitness trackers are available on PC.
  • 0.5 hours longer charging time
    Withings ScanWatch 42mm 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 ScanWatch 42mm has a lower screen resolution than the average fitness tracker (116x80 vs 194x368). The average fitness tracker has a screen resolution of 194x368.
  • 0.5 inch smaller screen size
    Withings ScanWatch 42mm has a lower screen size than the average fitness tracker (0.5 inch vs 1.04 inch). The average fitness tracker has a screen size of 1.04 inch.
    Digital sub-display only.
  • 3.32x heavier
    Withings ScanWatch 42mm is heavier than the average fitness tracker (83 g vs 25 g). The average fitness tracker weighs 25 g.
  • 2.7 mm thicker design
    Withings ScanWatch 42mm is thicker than the average fitness tracker (13.7 mm vs 11 mm). The average fitness tracker has a thickness of 11 mm.
  • Limited operating humidity range
    Withings ScanWatch 42mm supports a narrower operating humidity range than the average fitness tracker (20-90% vs 5-95%). The average fitness tracker supports an operating humidity range of 5-95%.
  • Ads in app
    Withings ScanWatch 42mm shows ads in the app, while the average fitness tracker does not. 50.6% of fitness trackers have an ad-free app.
  • Lower screen resolution
    Withings ScanWatch 42mm has a lower screen resolution than the average fitness tracker (116x80 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 ScanWatch 42mm has a lower screen resolution than the average fitness tracker (116x80 vs 194x368). The average fitness tracker has a screen resolution of 194x368.116x80 vs 194x368
  • 0.5 inch smaller screen size
    Withings ScanWatch 42mm has a lower screen size than the average fitness tracker (0.5 inch vs 1.04 inch). The average fitness tracker has a screen size of 1.04 inch.
    Digital sub-display only.
    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

    Withings ScanWatch 42mm has a lower screen size than the average fitness tracker (0.5 inch vs 1.04 inch). The average fitness tracker has a screen size of 1.04 inch.0.54 inch vs 1.04 inch
  • 0.5 hours longer charging time
    Withings ScanWatch 42mm 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 ScanWatch 42mm 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
  • 3.32x heavier
    Withings ScanWatch 42mm is heavier than the average fitness tracker (83 g vs 25 g). The average fitness tracker weighs 25 g.
    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 ScanWatch 42mm is heavier than the average fitness tracker (83 g vs 25 g). The average fitness tracker weighs 25 g.83 g vs 25 g
  • 4.43x more expensive
    Withings ScanWatch 42mm is more expensive than the average fitness tracker (£310 vs £70).
    Withings ScanWatch 42mm is more expensive than the average fitness tracker (£310 vs £70).£310 vs £70
  • 2.7 mm thicker design
    Withings ScanWatch 42mm is thicker than the average fitness tracker (13.7 mm vs 11 mm). The average fitness tracker has a thickness of 11 mm.
    What it is: Total depth of the watch case.
    When it matters: When overall size, thickness, or weight affects comfort during all-day wear, sleep, or exercise.

    Importance: LOW

    Good value: <10 mm

    Withings ScanWatch 42mm is thicker than the average fitness tracker (13.7 mm vs 11 mm). The average fitness tracker has a thickness of 11 mm.13.7 mm vs 11 mm
  • Ads in app
    Withings ScanWatch 42mm shows ads in the app, while the average fitness tracker does not. 50.6% of fitness trackers have an ad-free app.
    What it is: Operates without advertisements.
    When it matters: When account rules, app costs, exports, or software flexibility affect whether the ecosystem suits you long term.

    Importance: LOW

    Withings ScanWatch 42mm shows ads in the app, while the average fitness tracker does not. 50.6% of fitness trackers have an ad-free app.
  • Limited operating humidity range
    Withings ScanWatch 42mm supports a narrower operating humidity range than the average fitness tracker (20-90% vs 5-95%). The average fitness tracker supports an operating humidity range of 5-95%.
    What it is: States the humidity range within which the device can operate safely.
    When it matters: When you use the tracker in tougher temperatures, humidity, altitude, or outdoor conditions.

    Importance: LOW

    Withings ScanWatch 42mm supports a narrower operating humidity range than the average fitness tracker (20-90% vs 5-95%). The average fitness tracker supports an operating humidity range of 5-95%.20-90 % vs 5-95 %

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Third-party reviews

(Reviews last updated: June 2026)

What customers like about Withings ScanWatch 42mm?

  • Classic analog design that looks like a high-end traditional watch rather than a fitness tracker
  • Exceptional battery life lasting up to 30 days on a single charge
  • High-quality build materials including a stainless steel case and scratch-resistant sapphire glass
  • Advanced medical-grade health features such as ECG recordings and SpO2 (blood oxygen) monitoring
  • User-friendly and robust companion app that provides detailed health data and sleep analysis
  • Comfortable for daily wear with standard 20mm quick-release strap compatibility for the 42mm model
  • Water resistance up to 50 meters, making it suitable for swimming and showering

What customers dislike about Withings ScanWatch 42mm?

  • Lack of built-in GPS, requiring a connected smartphone to track workout routes
  • The small PMOLED digital display can be difficult to read in direct sunlight and makes notifications hard to scan
  • Missing common smartwatch features like NFC for contactless payments, music storage, and the ability to take calls
  • Navigation via the physical crown can feel tedious or cumbersome compared to a modern touchscreen
  • Some users report inconsistent step tracking accuracy and heart rate sensor lag during high-intensity exercise
  • The 42mm model is relatively heavy and bulky, which some found uncomfortable for sleep tracking
  • No always-on display for the digital portion and the analog hands can sometimes obstruct the small screen

Expert reviews

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wired.com
06/12/2021
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t3.com
28/04/2021
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engadget.com
07/09/2020
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support.withings.com
01/01/2021
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zdnet.com
18/11/2021
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pmc.ncbi.nlm.nih.gov
01/09/2022
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wareable.com
07/12/2021
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techradar.com
08/09/2020
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theguardian.com
14/09/2020
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uk.pcmag.com
30/11/2021
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trustedreviews.com
24/09/2020
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techadvisor.com
07/09/2020
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digitec.ch
02/11/2020
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medicalfuturist.com
08/12/2020
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apfeltalk.de
09/02/2022
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heise.de
28/09/2021
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computerbild.de
07/09/2020
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chip.de
06/11/2020
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homeandsmart.de
02/04/2026
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fitnessmodern.de
24/12/2023
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uhrdex.de
01/03/2023
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nakan.ch
16/11/2020
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frandroid.com
29/09/2021
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clubic.com
07/06/2021
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20minutes.fr
09/09/2020
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rtl.fr
10/09/2020
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journaldugeek.com
09/07/2021
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presse-citron.net
15/09/2020
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watchgeneration.fr
11/10/2020
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lhommetendance.fr
01/12/2021
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diisign.com
09/12/2020
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lesnumeriques.com
18/09/2020
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lesnumeriques.com
18/09/2020
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pauljmiller.wordpress.com
25/04/2024
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theguardian.com
14/09/2020
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fabriziocolista.it
22/04/2022
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iphoneitalia.com
18/10/2021
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macitynet.it
19/09/2021
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tg24.sky.it
20/04/2023
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altroconsumo.it
31/08/2023
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dday.it
29/10/2021
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coolesuggesties.nl
17/03/2025
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appletips.nl
10/10/2021
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runners.nl
11/09/2025
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