OVERALL
SPECS
VS AVERAGE
REVIEWS
ALTERNATIVES

Polar A370 Review | 171 Data compared

double-arrow
  • Avg. price in UK: ~£130
  • Avg. price in US: ~$180
  • Form factor: wristband
  • Battery life: 4 days
  • Screen size: 1.18 inch

Polar A370 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%

6.8

Technical Score

20.0%

8.7

User score

Very good
6.8

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%

7.9

Sports & Navigation

20.0%

3.5

Battery

18.0%

7.1

Health

18.0%

6.8

Display

8.0%

7.5

Smart Features

8.0%

9.4

App & Wellness

4.0%

9.1

Connectivity

4.0%

6.8

Design & Durability

Good
8.7

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%

8.2

User reviews

30.0%

10

Popularity

User score:
United Kingdom
amazon
4.1
(1471)

(Reviews last updated: Jun 2026)

Excellent
  • 4.7
    Swimming

    Score components:

    28.0%

    6.4

    ATM rating

    24.0%

    4.0

    Open-water swim mode

    18.0%

    6.4

    Waterproof depth rating

    15.0%

    4.0

    GPS

    15.0%

    1.5

    Battery life

  • 5.2
    Kids

    Score components:

    30.0%

    1.5

    Battery life

    25.0%

    5.7

    Weight

    20.0%

    6.4

    ATM rating

    15.0%

    7.0

    Screen size

    10.0%

    9.8

    Price

  • polar-a370
polar-a370

Best prices in UK

Best rankings

?

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

Verdict

The Polar A370 is a slim, waterproof fitness tracker featuring a 1.2-inch color TFT touchscreen with a resolution of 80x160 pixels and a rechargeable 110 mAh battery that provides up to 4 days of life. Key characteristics include 24/7 continuous wrist-based optical heart rate monitoring, advanced Polar Sleep Plus analytics for detailed sleep quality insights, and 3D accelerometer tracking for indoor activities. Main pros include its versatile ability to broadcast heart rate data to other Bluetooth devices, its integration with phone-based GPS for outdoor route mapping, and its comfortable, interchangeable silicone bands. However, notable cons include the lack of a built-in GPS sensor, a relatively short battery life compared to some competitors, and a display that lacks an always-on mode.

Technical Specifications of Polar A370

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%

7.9

Sports & Navigation

20.0%

3.5

Battery

18.0%

7.1

Health

18.0%

6.8

Display

8.0%

7.5

Smart Features

8.0%

9.4

App & Wellness

4.0%

9.1

Connectivity

4.0%

6.8

Design & Durability

6.8
Polar A370 has a technical score of 6.78 points, which is lower than 61.5% 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%

8.2

User reviews

30.0%

10

Popularity

User score:
United Kingdom
amazon
4.1
(1471)

(Reviews last updated: Jun 2026)

8.7
Polar A370 has a user score of 8.74 points, which is higher than 74.2% 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
Polar A370 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%

7.2

Overall score

40.0%

9.8

Price

8.0
Polar A370 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
Polar A370 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
Polar A370 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
Polar A370 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
Polar A370 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

no
Polar A370 does not have a blood oxygen sensor. 26.1% of fitness trackers have a blood oxygen sensor.
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
Polar A370 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
Polar A370 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
Polar A370 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
Polar A370 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
Polar A370 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
Polar A370 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
Polar A370 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

yes
Polar A370 supports call controls. 59.4% of fitness trackers support call controls.
Accept/reject on the tracker; audio stays on the phone.
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
Polar A370 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
Polar A370 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
Polar A370 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
Polar A370 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
Polar A370 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
Polar A370 supports inactivity alerts. 23.7% 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

yes
Polar A370 supports coaching. 67.5% of fitness trackers support coaching.
Smart Coach support.
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

?
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

?
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
Polar A370 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
Polar A370 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
Polar A370 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

4 days
Polar A370 offers a battery life of 4 days which is shorter than that of 92.1% of fitness trackers and equal to that of 2% 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

13 h
Polar A370 offers a training-mode battery life of 13 h which is longer than that of 66.7% of fitness trackers.
With mobile GPS on.
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

?
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

100 mAh
Polar A370 has a battery capacity of 100 mAh which is lower than that of 52.1% of fitness trackers and equal to that of 9.2% 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
Polar A370 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

1.18 inch
Polar A370 has a screen size of 1.18 inch which is larger than that of 61.5% of fitness trackers and equal to that of 0.7% 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

TFT LCD
Polar A370 uses TFT LCD display technology which is less advanced than that of 61.4% of fitness trackers and the same as that of 5.5% 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

80 x 160
Polar A370 has a screen resolution of 80x160 which is higher than that of 61.9% of fitness trackers and equal to that of 2.3% 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

?
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

wristband
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
Polar A370 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
Polar A370 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
Polar A370 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

23 mm
Show more

Polar A370 vs the average fitness tracker

  • Lower resting heart rate
    Polar A370 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

    Polar A370 supports Resting heart rate, while the average fitness tracker does not. 48.2% of fitness trackers support Resting heart rate.
  • Touchscreen
    Polar A370 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

    Polar A370 has a touchscreen, while the average fitness tracker does not. 43.8% of fitness trackers have a touchscreen.
  • Auto pause
    Polar A370 supports auto pause, while the average fitness tracker does not. 22.9% of fitness trackers support auto pause.
    Available through Polar Flow sport-profile settings for supported GPS workouts.
    What it is: Pauses activity tracking automatically when stopped.
    When it matters: When you want the tracker to capture more workouts and training details with less manual effort.

    Importance: LOW

    Polar A370 supports auto pause, while the average fitness tracker does not. 22.9% of fitness trackers support auto pause.
  • Coaching features
    Polar A370 supports coaching, while the average fitness tracker does not. 32.8% of fitness trackers support coaching.
    Smart Coach support.
    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

    Polar A370 supports coaching, while the average fitness tracker does not. 32.8% of fitness trackers support coaching.
  • Tracks elevation
    Polar A370 supports elevation tracking, while the average fitness tracker does not. 27.2% of fitness trackers support elevation tracking.
    Altitude via connected GPS
    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

    Polar A370 supports elevation tracking, while the average fitness tracker does not. 27.2% of fitness trackers support elevation tracking.
  • Color display
    Polar A370 has a color display, while the average fitness tracker does not. 37.9% of fitness trackers have a color display.
    What it is: Displays full color visuals.
    When it matters: When display technology affects contrast, color quality, power efficiency, or how premium the screen feels.

    Importance: LOW

    Polar A370 has a color display, while the average fitness tracker does not. 37.9% of fitness trackers have a color display.
  • Call control
    Polar A370 supports call controls, while the average fitness tracker does not. 40.9% of fitness trackers support call controls.
    Accept/reject on the tracker; audio stays on the phone.
    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

    Polar A370 supports call controls, while the average fitness tracker does not. 40.9% of fitness trackers support call controls.
  • Windows compatible
    Polar A370 is compatible with Windows, while the average fitness tracker is not. 22.3% of fitness trackers are compatible with Windows.
    Via Polar FlowSync.
    What it is: Compatible with Windows computers.
    When it matters: When compatibility with your phone, computer, accessories, or wireless setup affects how well the tracker fits into your ecosystem.

    Importance: LOW

    Polar A370 is compatible with Windows, while the average fitness tracker is not. 22.3% of fitness trackers are compatible with Windows.
  • Lower resting heart rate
    Polar A370 supports Resting heart rate, while the average fitness tracker does not. 48.2% of fitness trackers support Resting heart rate.
  • Auto pause
    Polar A370 supports auto pause, while the average fitness tracker does not. 22.9% of fitness trackers support auto pause.
  • Tracks elevation
    Polar A370 supports elevation tracking, while the average fitness tracker does not. 27.2% of fitness trackers support elevation tracking.
  • Built-in route tracker
    Polar A370 supports route tracking, while the average fitness tracker does not. 49.8% of fitness trackers support route tracking.
  • Works with external heart rate monitors
    Polar A370 is compatible with external heart rate monitors, while the average fitness tracker is not. 5.6% of fitness trackers are compatible with external heart rate monitors.
  • 4.5 h longer training-mode battery life
    Polar A370 has a higher battery life in training mode than the average fitness tracker (13 h vs 8.5 h). The average fitness tracker has 8.5 h of battery life in training mode.
  • Touchscreen
    Polar A370 has a touchscreen, while the average fitness tracker does not. 43.8% of fitness trackers have a touchscreen.
  • Color display
    Polar A370 has a color display, while the average fitness tracker does not. 37.9% of fitness trackers have a color display.
  • 0.14 inch larger screen size
    Polar A370 has a higher screen size than the average fitness tracker (1.2 inch vs 1.04 inch). The average fitness tracker has a screen size of 1.04 inch.
  • Windows compatible
    Polar A370 is compatible with Windows, while the average fitness tracker is not. 22.3% of fitness trackers are compatible with Windows.
  • Mac OS X compatible
    Polar A370 is compatible with Mac OS X, while the average fitness tracker is not. 27.5% of fitness trackers are compatible with Mac OS X.
  • Call control
    Polar A370 supports call controls, while the average fitness tracker does not. 40.9% of fitness trackers support call controls.
  • 1 more physical buttons
    Polar A370 has a higher physical buttons than the average fitness tracker (1 vs 0). The average fitness tracker has 0 of physical buttons.
  • Gesture control
    Polar A370 supports gesture controls, while the average fitness tracker does not. 40.8% of fitness trackers support gesture controls.
  • 27.8 mm lower height
    Polar A370 is shorter than the average fitness tracker (13 mm vs 40.8 mm). The average fitness tracker has a height of 40.8 mm.
  • Coaching features
    Polar A370 supports coaching, while the average fitness tracker does not. 32.8% of fitness trackers support coaching.
  • Available on PC
    Polar A370 is available on PC, while the average fitness tracker is not. 16.9% of fitness trackers are available on PC.

Total
Overall
Health
Sports & Navigation
Battery
Display
Connectivity
Smart Features
Design & Durability
App & Wellness
  • No automatic activity detection
    Polar A370 does not support automatic activity detection, while the average fitness tracker does. 50.3% of fitness trackers support automatic activity detection.
  • 6 days shorter battery life
    Polar A370 has a lower battery life than the average fitness tracker (4 days vs 10 days). The average fitness tracker has 10 days of battery life.
  • 0.5 hours longer charging time
    Polar A370 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.
  • 9.1% smaller battery capacity
    Polar A370 has a lower battery capacity than the average fitness tracker (100 mAh vs 110 mAh). The average fitness tracker has 110 mAh of battery capacity.
  • Lower screen resolution
    Polar A370 has a lower screen resolution than the average fitness tracker (80x160 vs 194x368). The average fitness tracker has a screen resolution of 194x368.
  • No stopwatch
    Polar A370 does not have a stopwatch, while the average fitness tracker does. 58.4% of fitness trackers have a stopwatch.
  • Limited ip rating
    Polar A370 has a lower IP rating than the average fitness tracker (IPX7 vs IP68). The average fitness tracker has an IP rating of IP68.
  • 2 ATM lower water resistance rating
    Polar A370 has a lower ATM rating than the average fitness tracker (3 ATM vs 5 ATM). The average fitness tracker has an ATM rating of 5 ATM.
  • 26.8% heavier
    Polar A370 is heavier than the average fitness tracker (31.7 g vs 25 g). The average fitness tracker weighs 25 g.
    Small size; Medium/Large is 37 g.
  • 20 m lower waterproof depth rating
    Polar A370 has a lower waterproof depth rating than the average fitness tracker (30 m vs 50 m). The average fitness tracker has a waterproof depth rating of 50 m.
  • 2.5 mm thicker design
    Polar A370 is thicker than the average fitness tracker (13.5 mm vs 11 mm). The average fitness tracker has a thickness of 11 mm.
  • 10 °C higher minimum operating temperature
    Polar A370 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.
  • 6 days shorter battery life
    Polar A370 has a lower battery life than the average fitness tracker (4 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

    Polar A370 has a lower battery life than the average fitness tracker (4 days vs 10 days). The average fitness tracker has 10 days of battery life.4 days vs 10 days
  • No automatic activity detection
    Polar A370 does not support automatic activity detection, while the average fitness tracker does. 50.3% of fitness trackers support automatic activity detection.
    What it is: Automatically recognizes and records physical activities.
    When it matters: When you want common workouts captured even on days when you forget to start tracking manually.

    Importance: MEDIUM

    Polar A370 does not support automatic activity detection, while the average fitness tracker does. 50.3% of fitness trackers support automatic activity detection.
  • Lower screen resolution
    Polar A370 has a lower screen resolution than the average fitness tracker (80x160 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

    Polar A370 has a lower screen resolution than the average fitness tracker (80x160 vs 194x368). The average fitness tracker has a screen resolution of 194x368.80x160 vs 194x368
  • 0.5 hours longer charging time
    Polar A370 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

    Polar A370 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
  • Limited ip rating
    Polar A370 has a lower IP rating than the average fitness tracker (IPX7 vs IP68). The average fitness tracker has an IP rating of IP68.
    What it is: Dust and water resistance classification according to IP standards.
    When it matters: When you plan to swim, shower, dive, or use the tracker regularly around water.

    Importance: LOW

    Polar A370 has a lower IP rating than the average fitness tracker (IPX7 vs IP68). The average fitness tracker has an IP rating of IP68.IPX7 vs IP68
  • 2 ATM lower water resistance rating
    Polar A370 has a lower ATM rating than the average fitness tracker (3 ATM vs 5 ATM). The average fitness tracker has an ATM rating of 5 ATM.
    What it is: Water resistance depth measured in atmospheres.
    When it matters: When you plan to swim, shower, dive, or use the tracker regularly around water.

    Importance: LOW

    Good value: >=5 ATM

    Polar A370 has a lower ATM rating than the average fitness tracker (3 ATM vs 5 ATM). The average fitness tracker has an ATM rating of 5 ATM.3 ATM vs 5 ATM
  • 26.8% heavier
    Polar A370 is heavier than the average fitness tracker (31.7 g vs 25 g). The average fitness tracker weighs 25 g.
    Small size; Medium/Large is 37 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

    Polar A370 is heavier than the average fitness tracker (31.7 g vs 25 g). The average fitness tracker weighs 25 g.31.7 g vs 25 g
  • 20 m lower waterproof depth rating
    Polar A370 has a lower waterproof depth rating than the average fitness tracker (30 m vs 50 m). The average fitness tracker has a waterproof depth rating of 50 m.
    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

    Polar A370 has a lower waterproof depth rating than the average fitness tracker (30 m vs 50 m). The average fitness tracker has a waterproof depth rating of 50 m.30 m vs 50 m
Total
Overall
Sports & Navigation
Battery
Display
Smart Features
Design & Durability

Graphic comparison of Polar A370 and

Attribute category
Attribute
No results found

Third-party reviews

United Kingdom
amazon
4.1
1471 Reviews

(Reviews last updated: Jun 2026)

What customers like about Polar A370?

  • High-quality color touchscreen with good outdoor visibility
  • Continuous and accurate heart rate monitoring for high-intensity workouts
  • Excellent sleep tracking through the 'Sleep Plus' intelligence system
  • Waterproof design suitable for swimming
  • Comprehensive data analysis via the Polar Flow smartphone app
  • Customizable training programs and inactivity alerts

What customers dislike about Polar A370?

  • Poor battery life, often lasting only 2 days with all features enabled
  • Lacks built-in GPS, requiring a tethered smartphone for route mapping
  • Chunky and bulky design that can be uncomfortable for overnight wear
  • Low-resolution screen with visible pixelation
  • Screen is not 'always-on', requiring a button press or wrist flick to wake
  • Hit-or-miss smartphone connectivity and syncing issues

Expert reviews

I
iot-tests.org
23/08/2018
Polar A370: Fit in privacy, too

The Polar A370 fitness tracker and its accompanying Polar Flow app (version 3.6.5) demonstrate robust security practices across local and online operations. Local communication via Bluetooth is a major strength, requiring a physical button press on the tracker and PIN confirmation on the smartphone to establish an exclusive, securely encrypted pair. Online communication and data...Read more

G
gearinstitute.com
31/01/2018
Polar A370 Fitness Tracker Review

The Gear Institute review highlights the Polar A370 as a data-comprehensive, highly functional wearable with a vibrant, full-color touchscreen and an intuitive user interface paired with the Polar Flow app. Key pros include reliable continuous heart rate monitoring, waterproofing up to 30 meters, effective phone-assisted GPS tracking, and accurate sensors for daily metrics....Read more

T
the5krunner.com
03/11/2017
Polar A370 Review | Smart Fitness Band

The Polar A370 is a sleek smart fitness band featuring a high-resolution color touchscreen, modular customizable straps, and waterproof capability up to 30 meters, making it suitable for pool swimming. It tracks daily steps, detailed sleep quality using Polar’s Sleep Plus technology, and general exercise metrics across customizable sports profiles via the highly detailed Polar Flow...Read more

T
techradar.com
21/08/2017
Polar A370 review

The Polar A370 is a feature-rich fitness tracker that transitions from a simple activity band toward a dedicated running watch by offering 24/7 heart rate sensing and smartphone-assisted GPS tracking. It features a responsive, color LCD touchscreen protected by scratch-resistant glass that automatically adjusts to ambient light for good outdoor visibility. However, the device leans...Read more

W
wareable.com
02/08/2017
Polar A370 review

The Wareable review of the Polar A370 highlights the tracker as a significant upgrade featuring 24/7 continuous heart rate monitoring, advanced Sleep Plus analysis, and connected GPS for accurate outdoor activity tracking. It is positioned as a strong competitor in the fitness market, boasting a clear display and smart notifications. However, drawbacks include the optical heart rate...Read more

D
dcrainmaker.com
07/06/2017
Polar A370 In-Depth Review

The Polar A370 is a sleek, user-friendly fitness tracker featuring a brilliant color touchscreen, an upgraded optical heart rate sensor, and interchangeable bands. It introduces notable feature upgrades to its predecessor (the A360), including continuous 24/7 heart rate tracking every 5 minutes and standard Bluetooth Smart heart rate rebroadcasting to external apps and bike...Read more

T
tomsguide.com
03/07/2017
Polar A370 Review: This Fitness Tracker Has Heart

The Polar A370 is a fitness tracking wristband reviewed by Caitlin McGarry on Tom's Guide, serving as an upgraded successor to the A360 model. Priced at $179, the device targets main competitor Fitbit by introducing 24/7 continuous heart-rate monitoring, "Polar Sleep Plus" sleep analytics, and an improved watch-buckle band clasp. It features a large, bright, full-color TFT...Read more

E
expertreviews.co.uk
29/11/2018
Polar A370 review: Not worthy of your wrist For additional comparisons, consult tech review sites.

The Polar A370 is a chunky and uncomfortable fitness band that fails to justify its premium price tag. While it functions adequately as a basic tracker to log steps, continuous heart rate, and sleep patterns, it lacks built-in GPS capabilities. Instead, it relies on piggybacking off a connected smartphone's GPS, which can lead to wildly inaccurate pace and distance data if the...Read more

P
pcmag.com
27/11/2018
Polar A370 Review

The Polar A370 is a sports-focused tracker offering excellent training value at a $149.95 price point, featuring highly accurate optical heart rate monitoring, comprehensive activity tracking, and actionable post-workout metrics. While providing robust, dedicated fitness tracking and basic smartphone notifications, the device lacks a modern, sleek aesthetic, making it more suited...Read more

C
computerbild.de
16/11/2017
Polar A370: Review, Buy, Comparison - COMPUTER BILD

The Polar A370 is a waterproof multisport fitness tracker featuring a vibrant color TFT touchscreen display (80x160 pixels) and a continuous heart rate monitor that measures pulse activity at least every five minutes. In testing, the device excelled with its highly detailed "Polar Sleep Plus" sleep quality analysis (scoring rest from 1 to 5), an intuitive menu structure, and its...Read more

(Translated)Show original
C
chip.de
10/08/2017
Polar A370 Review

The Polar A370 fitness tracker earns praise for its high tracking accuracy and its versatile 24/7 continuous heart rate monitoring, which functions during both active workouts and periods of rest. A standout feature is the advanced Sleep Plus sleep analysis platform, which measures duration, interruptions, deep sleep phases, and overall sleep continuity on a scale from 0 to 5 before...Read more

(Translated)Show original
I
iot-tests.org
23/08/2018
Polar A370: Fit in Data Privacy Too

The Polar A370 fitness tracker, evaluated alongside the Polar Flow app (version 3.6.5), demonstrates strong security engineering and robust user privacy protection. A major strength is its local Bluetooth communication, which relies on a secure, hardware-activated pairing process and fully encrypted data synchronization. Online communication with the cloud is similarly exemplary,...Read more

(Translated)Show original
E
elternplanet.ch
23/03/2018
“It’s Time To Move” - Polar A370 Review

The Polar A370 is a sleek, lightweight fitness tracker featuring continuous wrist-based heart rate monitoring every five minutes and an integrated sleep-tracking system that automatically measures sleep quality and quantity. Designed for 24-hour wear, it offers a battery life of at least four days, charges via standard micro-USB, and includes various sports profiles alongside...Read more

(Translated)Show original
H
hifitest.de
12/05/2018
Polar A370 review - Miscellaneous mobile features

The Polar A370 fitness tracker focuses heavily on sports functionality rather than serving as a traditional smartwatch, standing out for its highly precise and tightly integrated heart rate monitoring. To extend the device's battery life to an impressive four to five days under normal use, Polar omitted a built-in GPS sensor, requiring users to connect to a smartphone's GPS via the...Read more

(Translated)Show original
F
fitnessmodern.de
05/06/2018
Polar A370 In-Depth Hands-On Review", "Polar A370 Detailed Practical Test", "Polar A370 Comprehensive Real-World Review

The Polar A370 is a fitness tracker that significantly improves upon its predecessor, the A360, by bridging the gap between basic activity trackers and advanced sports watches. It features a highly readable, vibrant color touch display with gesture support and is built with a comfortable, soft silicone band utilizing a secure, classic watch buckle. Key technical highlights include a...Read more

(Translated)Show original
N
netzwelt.de
04/08/2019
Polar A370 Review: This Fitness Tracker Leaves Us Cold

The Polar A370 fitness tracker receives a mediocre, satisfactory review ("befriedigend", 3.2 out of 5 stars), with its design and performance heavily criticized for feeling outdated. Among its main strengths, the device offers highly accurate continuous heart rate monitoring that only deviates by one or two beats compared to a dedicated pulse meter. It provides extensive activity...Read more

(Translated)Show original
H
heise.de
12/06/2019
Polar A370 fitness tracker review | heise online

The Polar A370 is a comfortable fitness tracker designed for casual athletes that offers solid daily tracking, but it is heavily held back by buggy software. On the positive side, the device features continuous heart rate monitoring and supports connected GPS via a smartphone. It tracks up to 20 customizable sport profiles, boasts an impressive WR30 waterproof rating suitable for...Read more

(Translated)Show original
R
rotek.fr
28/04/2018
Polar A370: A fitness tracker made for athletes!

The Polar A370 is a functional fitness tracker designed for active individuals and those looking to improve their health habits. Weighing between 31.7g and 37.3g depending on size, it features a 13mm x 27mm color TFT touchscreen and is water-resistant up to WR30 standards. The device tracks daily activity using a color-filling dial gauge, reminds users to move after an hour of...Read more

(Translated)Show original
W
watchgeneration.fr
18/03/2018
Polar A370 Fitness Tracker Review

The WatchGeneration review positions the €200 Polar A370 as a premium tracker designed for fitness enthusiasts, highlighting its continuous 24/7 optical heart rate monitoring which boosts sampling during activity. Key strengths include the comprehensive Polar Flow app for detailed activity and sleep analysis, along with a waterproof design suitable for swimming. YouTube ·nakan.ch,...Read more

(Translated)Show original
T
tomsguide.fr
04/09/2017
Polar A370: Is this fitness tracker worth it?

The Polar A370 fitness tracker offers a beautiful, large capacitive TFT color touchscreen that makes it exceptionally easy to read notifications and activity metrics on the go. It provides highly accurate heart rate monitoring by utilizing continuous 24/7 tracking, which delivers precise calorie-burn data and syncs flawlessly with the Polar Flow application. The device also...Read more

(Translated)Show original
L
lesnumeriques.com
17/06/2017
Polar A370 Review: At the Heart of the Matter!

The Polar A370 is a sports-oriented fitness tracker launched at €200 that stands out for its continuous 24/7 heart rate monitoring, improving upon its predecessor, the A360, which only tracked heart rate during workouts or on-demand. It features a highly legible 1.2 x 2.6 cm color touchscreen, seamless pairing with smartphones for real-time notifications (SMS, emails, calendar...Read more

(Translated)Show original
R
runnea.com
N/D
Polar A370: Features and Reviews

The Polar A370 is reviewed as a highly capable, hybrid multi-sport device that blends the features of a heart rate monitor, fitness tracker, and smart band. Serving as the direct successor to the highly popular A360, this updated model maintains its sleek aesthetic while targeting a broader audience through enhanced training and recovery software. Prominent pros highlighted in the...Read more

(Translated)Show original
L
labolsadelcorredor.com
24/05/2017
Polar A370: fitness tracker, 24/7 heart rate monitor, and connected GPS

The Polar A370 is an updated fitness tracker that shares an identical design with its predecessor, the A360, but introduces critical functionality improvements to address past user complaints. It is highly tailored for gym enthusiasts and indoor sports, retaining a vibrant color touchscreen, multi-sport profile configurations, phase-based workout programming, and water resistance up...Read more

(Translated)Show original
T
test-aankoop.be
[No date provided]
POLAR A370 review and test - Testaankoop", "POLAR A370 test and review - Testaankoop

The Polar A370 is a discontinued activity tracker that earned an overall "good quality" score of 66 out of 100 from Testaankoop. It is highly regarded for its physical build, featuring excellent scratch resistance (5 stars), strong construction, and comfortable wrist wear. In terms of performance, the tracker shines with a flawless 5-star rating for both its heart rate monitoring...Read more

(Translated)Show original
F
fitgirlcode.nl
12/09/2017
Review: I tried the Polar A370 activity tracker

The Polar A370 activity tracker is reviewed as a highly effective, feminine, and slim wearable that successfully upgrades its predecessor, the A360. The reviewer praises its sleek touchscreen design, waterproof build, and breathable, interchangeable wristbands that remain comfortable during heavy training. In terms of performance, the tracker stands out for its 24/7 continuous heart...Read more

(Translated)Show original
G
gymjunkies.nl
30/11/2017
POLAR A370 FITNESS TRACKER | REVIEW

In this review, the author shares her personal experience after testing the Polar A370 activity tracker continuously for three weeks. Her primary motivation for using the device was to monitor basic metrics like daily steps and calorie burn, especially since working from home can lead to an inactive lifestyle. The tracker includes continuous 24/7 heart rate tracking via LED lights...Read more

(Translated)Show original

Video reviews

Best alternatives

huawei-fit
Huawei Fit

Fitness trackers

8.3
fitbit-luxe
Fitbit Luxe

Fitness trackers

8.0
fitbit-charge-4
Fitbit Charge 4

Fitness trackers

8.0
fitbit-charge-3
Fitbit Charge 3

Fitness trackers

8.0
fitbit-charge-5
Fitbit Charge 5

Fitness trackers

8.2
garmin-vivosmart-3-large
Garmin vívosmart 3 Large

Fitness trackers

7.5
fitbit-alta-hr
Fitbit Alta HR

Fitness trackers

7.4
fitbit-charge-hr
Fitbit Charge HR

Fitness trackers

7.0
fitbit-charge-2
Fitbit Charge 2

Fitness trackers

7.4
garmin-vivosmart-5
Garmin vívosmart 5

Fitness trackers

7.9
garmin-vivosmart
Garmin vívosmart

Fitness trackers

6.5
samsung-gear-fit2
Samsung Gear FIT2

Fitness trackers

8.0

Compare Polar A370 with

VS
VS

Compare