Fitbit Charge 4 Review | 171 Data compared

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  • Avg. price in UK: ~£130
  • Avg. price in US: ~$110
  • Form factor: wristband
  • Battery life: 7 days
  • Screen size: 1 inch

Fitbit Charge 4 review. Compare 171 technical specifications and user reviews to see how it ranks among fitness trackers and if it is worth buying.

8.0

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%

7.7

Technical Score

20.0%

9.3

User score

Excellent
7.7

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%

9.1

Sports & Navigation

20.0%

4.1

Battery

18.0%

9.7

Health

18.0%

6.6

Display

8.0%

8.6

Smart Features

8.0%

9.7

App & Wellness

4.0%

7.9

Connectivity

4.0%

8.2

Design & Durability

Very good
9.3

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%

9.0

User reviews

30.0%

10

Popularity

User score:
United Kingdom
amazon
4.5
(47436)
amazon
4.4
(3622)
amazon
3.6
(307)
amazon
3.7
(121)
amazon
4.4
(22)

(Reviews last updated: June 2026)

Exceptional
  • 7.5
    Swimming

    Score components:

    28.0%

    10

    ATM rating

    24.0%

    4.0

    Open-water swim mode

    18.0%

    10

    Waterproof depth rating

    15.0%

    10

    GPS

    15.0%

    3.0

    Battery life

  • 6.2
    Kids

    Score components:

    30.0%

    3.0

    Battery life

    25.0%

    6.2

    Weight

    20.0%

    10

    ATM rating

    15.0%

    5.3

    Screen size

    10.0%

    9.8

    Price

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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 Fitbit Charge 4 is a lightweight, water-resistant fitness tracker (up to 50m) featuring a 1-inch monochrome OLED touchscreen, built-in GPS for phone-free activity tracking, and an altimeter for measuring floors climbed. Key characteristics include 24/7 heart rate monitoring, SpO2 sensors for blood oxygen tracking, and the Active Zone Minutes metric to optimize workout intensity. Main pros include its slim design, built-in GPS, Fitbit Pay for contactless payments, and a battery life of up to 7 days (though this drops to approximately 5 hours with continuous GPS use). Major cons include a basic grayscale display that can be difficult to read in direct sunlight, the lack of an always-on display, and no onboard music storage beyond basic Spotify playback controls.

Technical Specifications of Fitbit Charge 4

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%

9.1

Sports & Navigation

20.0%

4.1

Battery

18.0%

9.7

Health

18.0%

6.6

Display

8.0%

8.6

Smart Features

8.0%

9.7

App & Wellness

4.0%

7.9

Connectivity

4.0%

8.2

Design & Durability

7.7
Fitbit Charge 4 has a technical score of 7.69 points, which is higher than 73.7% 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%

9.0

User reviews

30.0%

10

Popularity

User score:
United Kingdom
amazon
4.5
(47436)
amazon
4.4
(3622)
amazon
3.6
(307)
amazon
3.7
(121)
amazon
4.4
(22)

(Reviews last updated: June 2026)

9.3
Fitbit Charge 4 has a user score of 9.28 points, which is higher than 95.8% 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
Fitbit Charge 4 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%

8.0

Overall score

40.0%

9.8

Price

8.6
Fitbit Charge 4 has a quality-to-price ratio of 8.6 points, which is higher than 78.4% 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
Fitbit Charge 4 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
Fitbit Charge 4 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

yes
Fitbit Charge 4 supports high and low heart rate alerts. 66.8% of fitness trackers support high and low heart rate alerts.
High and low resting 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
Fitbit Charge 4 supports irregular heart rate alerts. 89% of fitness trackers support irregular heart rate alerts.
Irregular rhythm 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
Fitbit Charge 4 has a blood oxygen sensor. 74.4% of fitness trackers have a blood oxygen sensor.
Sleep oxygen 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

yes
Fitbit Charge 4 has GPS. 89.5% 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

GPS + GLONASS
Fitbit Charge 4 supports GPS + GLONASS satellite systems which is more versatile than that of 89.3% of fitness trackers and the same as that of 5.1% of fitness trackers.
Multi-GNSS support.
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

?
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
Fitbit Charge 4 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

yes
Fitbit Charge 4 supports faster GPS acquisition. 93.3% of fitness trackers support faster GPS acquisition.
Faster satellite lock claimed.
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
Fitbit Charge 4 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
Fitbit Charge 4 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
Fitbit Charge 4 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
Fitbit Charge 4 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

yes
Fitbit Charge 4 supports calendar sync. 80.6% of fitness trackers support calendar sync.
Uses an agenda app for on-device event viewing.
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
Fitbit Charge 4 supports activity reports. 5.7% of fitness trackers support activity reports.
via Fitbit app
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
Fitbit Charge 4 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
Fitbit Charge 4 supports achievements. 24.3% of fitness trackers support achievements.
Includes milestone trophies.
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
Fitbit Charge 4 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
Fitbit Charge 4 supports coaching. 67.5% of fitness trackers support coaching.
Via Fitbit Premium in the Fitbit 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
Fitbit Charge 4 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

30 m
Fitbit Charge 4 offers a Bluetooth range of 30 m which is higher than that of 90.8% of fitness trackers and equal to that of 6.2% 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

yes
Fitbit Charge 4 has NFC. 90.5% 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
Fitbit Charge 4 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

?
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

7 days
Fitbit Charge 4 offers a battery life of 7 days which is shorter than that of 53.5% of fitness trackers and equal to that of 22.8% of fitness trackers.
Shorter with GPS
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

5 h
Fitbit Charge 4 offers a GPS-on battery life of 5 h which is shorter than that of 60% of fitness trackers and equal to that of 33.3% of fitness trackers.
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

5 h
Fitbit Charge 4 offers a training-mode battery life of 5 h which is shorter than that of 74.1% of fitness trackers and equal to that of 22.2% of fitness trackers.
Using built-in GPS.
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

71 mAh
Fitbit Charge 4 has a battery capacity of 71 mAh which is lower than that of 73.9% of fitness trackers and equal to that of 0.7% 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
Fitbit Charge 4 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
Fitbit Charge 4 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

PMOLED
Fitbit Charge 4 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

100 x 160
Fitbit Charge 4 has a screen resolution of 100x160 which is higher than that of 67.6% of fitness trackers and equal to that of 0.6% 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

189 ppi
Fitbit Charge 4 has a pixel density of 189 ppi which is lower than that of 71.6% of fitness trackers and equal to that of 1% of fitness trackers.
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
Fitbit Charge 4 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
Fitbit Charge 4 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
Fitbit Charge 4 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

22.7 mm
Show more

Fitbit Charge 4 vs the average fitness tracker

  • Blood oxygen monitoring
    Fitbit Charge 4 has a blood oxygen sensor, while the average fitness tracker does not. 26% of fitness trackers have a blood oxygen sensor.
    Sleep oxygen 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

    Fitbit Charge 4 has a blood oxygen sensor, while the average fitness tracker does not. 26% of fitness trackers have a blood oxygen sensor.
  • Built-in GPS
    Fitbit Charge 4 has GPS, while the average fitness tracker does not. 11% of fitness trackers have 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

    Fitbit Charge 4 has GPS, while the average fitness tracker does not. 11% of fitness trackers have GPS.
  • Tracks HRV
    Fitbit Charge 4 supports HRV tracking, while the average fitness tracker does not. 9.1% of fitness trackers support HRV tracking.
    Sleep only.
    What it is: Tracks heart rate variability over time.
    When it matters: When recovery, stress, or readiness trends matter and you want more than just simple heart-rate readings.

    Importance: LOW

    Fitbit Charge 4 supports HRV tracking, while the average fitness tracker does not. 9.1% of fitness trackers support HRV tracking.
  • Measures VO2 max
    Fitbit Charge 4 supports VO2 max tracking, while the average fitness tracker does not. 22.5% of fitness trackers support VO2 max tracking.
    Cardio Fitness Score.
    What it is: Measures maximum oxygen uptake during exercise.
    When it matters: When deeper insight into sleep quality, recovery, or overall readiness matters more than raw numbers alone.

    Importance: LOW

    Fitbit Charge 4 supports VO2 max tracking, while the average fitness tracker does not. 22.5% of fitness trackers support VO2 max tracking.
  • Lower resting heart rate
    Fitbit Charge 4 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

    Fitbit Charge 4 supports Resting heart rate, while the average fitness tracker does not. 48.2% of fitness trackers support Resting heart rate.
  • Touchscreen
    Fitbit Charge 4 has a touchscreen, while the average fitness tracker does not. 43.8% of fitness trackers have a touchscreen.
    Supports swipe/touch gesture navigation.
    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

    Fitbit Charge 4 has a touchscreen, while the average fitness tracker does not. 43.8% of fitness trackers have a touchscreen.
  • Smart alarm
    Fitbit Charge 4 supports a smart alarm, while the average fitness tracker does not. 28.1% of fitness trackers support a smart alarm.
    Smart Wake added via firmware update 1.96.29.
    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

    Fitbit Charge 4 supports a smart alarm, while the average fitness tracker does not. 28.1% of fitness trackers support a smart alarm.
  • Auto pause
    Fitbit Charge 4 supports auto pause, while the average fitness tracker does not. 22.9% of fitness trackers support auto pause.
    Running only.
    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

    Fitbit Charge 4 supports auto pause, while the average fitness tracker does not. 22.9% of fitness trackers support auto pause.
  • Blood oxygen monitoring
    Fitbit Charge 4 has a blood oxygen sensor, while the average fitness tracker does not. 26% of fitness trackers have a blood oxygen sensor.
  • Tracks HRV
    Fitbit Charge 4 supports HRV tracking, while the average fitness tracker does not. 9.1% of fitness trackers support HRV tracking.
  • Measures VO2 max
    Fitbit Charge 4 supports VO2 max tracking, while the average fitness tracker does not. 22.5% of fitness trackers support VO2 max tracking.
  • Lower resting heart rate
    Fitbit Charge 4 supports Resting heart rate, while the average fitness tracker does not. 48.2% of fitness trackers support Resting heart rate.
  • Heart rate alerts
    Fitbit Charge 4 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
    Fitbit Charge 4 supports respiratory rate tracking, while the average fitness tracker does not. 13.2% of fitness trackers support respiratory rate tracking.
  • Built-in temperature sensor
    Fitbit Charge 4 has a temperature sensor, while the average fitness tracker does not. 10.2% of fitness trackers have a temperature sensor.
  • Irregular heart rate alerts
    Fitbit Charge 4 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
    Fitbit Charge 4 supports menstrual cycle tracking, while the average fitness tracker does not. 41.7% of fitness trackers support menstrual cycle tracking.
  • Tracks skin temperature
    Fitbit Charge 4 supports skin temperature tracking, while the average fitness tracker does not. 11.3% of fitness trackers support skin temperature tracking.
  • Period notifications
    Fitbit Charge 4 has period notifications, while the average fitness tracker does not. 32% of fitness trackers have period notifications.
  • Fertile window notifications
    Fitbit Charge 4 displays fertile window notifications, while the average fitness tracker does not. 24.4% of fitness trackers display fertile window notifications.
  • Ovulation prediction
    Fitbit Charge 4 predicts ovulation, while the average fitness tracker does not. 41.4% of fitness trackers predict ovulation.
  • Cycle start prediction
    Fitbit Charge 4 predicts the start date, while the average fitness tracker does not. 42.2% of fitness trackers predict the start date.
  • Built-in GPS
    Fitbit Charge 4 has GPS, while the average fitness tracker does not. 11% of fitness trackers have GPS.
  • Auto pause
    Fitbit Charge 4 supports auto pause, while the average fitness tracker does not. 22.9% of fitness trackers support auto pause.
  • Tracks elevation
    Fitbit Charge 4 supports elevation tracking, while the average fitness tracker does not. 27.2% of fitness trackers support elevation tracking.
  • Built-in barometer
    Fitbit Charge 4 has a barometer, while the average fitness tracker does not. 10.7% of fitness trackers have a barometer.
  • Built-in route tracker
    Fitbit Charge 4 supports route tracking, while the average fitness tracker does not. 49.8% of fitness trackers support route tracking.
  • Fast GPS lock
    Fitbit Charge 4 supports faster GPS acquisition, while the average fitness tracker does not. 7.1% of fitness trackers support faster GPS acquisition.
  • Broad satellite support
    Fitbit Charge 4 supports more satellite systems than the average fitness tracker (GPS + GLONASS vs no). The average fitness tracker supports no satellite systems.
  • Touchscreen
    Fitbit Charge 4 has a touchscreen, while the average fitness tracker does not. 43.8% of fitness trackers have a touchscreen.
  • Branded damage-resistant glass
    Fitbit Charge 4 uses branded damage-resistant glass, while the average fitness tracker does not. 22.2% of fitness trackers use branded damage-resistant glass.
  • Ambient light sensor
    Fitbit Charge 4 has an ambient light sensor, while the average fitness tracker does not. 15.8% of fitness trackers have an ambient light sensor.
  • Durable display glass
    Fitbit Charge 4 uses more durable display glass than the average fitness tracker (Gorilla Glass 3 vs glass). The average fitness tracker uses glass display glass.
  • 20 m longer Bluetooth range
    Fitbit Charge 4 has a longer Bluetooth range than the average fitness tracker (30 m vs 10 m). The average fitness tracker offers a Bluetooth range of 10 m.
  • NFC
    Fitbit Charge 4 has NFC, while the average fitness tracker does not. 10.1% of fitness trackers have NFC.
  • Smart alarm
    Fitbit Charge 4 supports a smart alarm, while the average fitness tracker does not. 28.1% of fitness trackers support a smart alarm.
  • Passcode protection
    Fitbit Charge 4 supports passcode protection, while the average fitness tracker does not. 17.2% of fitness trackers support passcode protection.
  • Call control
    Fitbit Charge 4 supports call controls, while the average fitness tracker does not. 40.9% of fitness trackers support call controls.
  • Calendar sync
    Fitbit Charge 4 supports calendar sync, while the average fitness tracker does not. 19.8% of fitness trackers support calendar sync.
  • Gesture control
    Fitbit Charge 4 supports gesture controls, while the average fitness tracker does not. 40.8% of fitness trackers support gesture controls.
  • Coaching features
    Fitbit Charge 4 supports coaching, while the average fitness tracker does not. 32.8% of fitness trackers support coaching.
  • Tracks calorie intake
    Fitbit Charge 4 supports calorie intake tracking, while the average fitness tracker does not. 39.3% of fitness trackers support calorie intake tracking.
  • Water intake tracking
    Fitbit Charge 4 supports water intake tracking, while the average fitness tracker does not. 47% of fitness trackers support water intake tracking.
  • Tracks temperature
    Fitbit Charge 4 supports temperature tracking, while the average fitness tracker does not. 12.9% of fitness trackers support temperature tracking.
  • Points-based system
    Fitbit Charge 4 supports a points-based system, while the average fitness tracker does not. 39.1% of fitness trackers support a points-based system.
  • 3 days shorter battery life
    Fitbit Charge 4 has a lower battery life than the average fitness tracker (7 days vs 10 days). The average fitness tracker has 10 days of battery life.
    Shorter with GPS
  • 35.5% smaller battery capacity
    Fitbit Charge 4 has a lower battery capacity than the average fitness tracker (71 mAh vs 110 mAh). The average fitness tracker has 110 mAh of battery capacity.
  • 2 h shorter GPS battery life
    Fitbit Charge 4 has a lower battery life with GPS on than the average fitness tracker (5 h vs 7 h). The average fitness tracker has 7 h of battery life with GPS on.
  • 3.5 h shorter training-mode battery life
    Fitbit Charge 4 has a lower battery life in training mode than the average fitness tracker (5 h vs 8.5 h). The average fitness tracker has 8.5 h of battery life in training mode.
    Using built-in GPS.
  • Lower screen resolution
    Fitbit Charge 4 has a lower screen resolution than the average fitness tracker (100x160 vs 194x368). The average fitness tracker has a screen resolution of 194x368.
  • 23.5% lower pixel density
    Fitbit Charge 4 has a lower pixel density than the average fitness tracker (189 ppi vs 247 ppi). The average fitness tracker has a pixel density of 247 ppi.
  • 20% heavier
    Fitbit Charge 4 is heavier than the average fitness tracker (30 g vs 25 g). The average fitness tracker weighs 25 g.
  • 1.5 mm thicker design
    Fitbit Charge 4 is thicker than the average fitness tracker (12.5 mm vs 11 mm). The average fitness tracker has a thickness of 11 mm.
  • 10 °C higher minimum operating temperature
    Fitbit Charge 4 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.
  • 3 days shorter battery life
    Fitbit Charge 4 has a lower battery life than the average fitness tracker (7 days vs 10 days). The average fitness tracker has 10 days of battery life.
    Shorter with GPS
    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

    Fitbit Charge 4 has a lower battery life than the average fitness tracker (7 days vs 10 days). The average fitness tracker has 10 days of battery life.7 days vs 10 days
  • Lower screen resolution
    Fitbit Charge 4 has a lower screen resolution than the average fitness tracker (100x160 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

    Fitbit Charge 4 has a lower screen resolution than the average fitness tracker (100x160 vs 194x368). The average fitness tracker has a screen resolution of 194x368.100x160 vs 194x368
  • 35.5% smaller battery capacity
    Fitbit Charge 4 has a lower battery capacity than the average fitness tracker (71 mAh vs 110 mAh). The average fitness tracker has 110 mAh of 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

    Fitbit Charge 4 has a lower battery capacity than the average fitness tracker (71 mAh vs 110 mAh). The average fitness tracker has 110 mAh of battery capacity.71 mAh vs 110 mAh
  • 2 h shorter GPS battery life
    Fitbit Charge 4 has a lower battery life with GPS on than the average fitness tracker (5 h vs 7 h). The average fitness tracker has 7 h of 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

    Fitbit Charge 4 has a lower battery life with GPS on than the average fitness tracker (5 h vs 7 h). The average fitness tracker has 7 h of battery life with GPS on.5 h vs 7 h
  • 23.5% lower pixel density
    Fitbit Charge 4 has a lower pixel density than the average fitness tracker (189 ppi vs 247 ppi). The average fitness tracker has a pixel density of 247 ppi.
    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

    Fitbit Charge 4 has a lower pixel density than the average fitness tracker (189 ppi vs 247 ppi). The average fitness tracker has a pixel density of 247 ppi.189 ppi vs 247 ppi
  • 20% heavier
    Fitbit Charge 4 is heavier than the average fitness tracker (30 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

    Fitbit Charge 4 is heavier than the average fitness tracker (30 g vs 25 g). The average fitness tracker weighs 25 g.30 g vs 25 g
  • 3.5 h shorter training-mode battery life
    Fitbit Charge 4 has a lower battery life in training mode than the average fitness tracker (5 h vs 8.5 h). The average fitness tracker has 8.5 h of battery life in training mode.
    Using built-in GPS.
    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

    Fitbit Charge 4 has a lower battery life in training mode than the average fitness tracker (5 h vs 8.5 h). The average fitness tracker has 8.5 h of battery life in training mode.5 h vs 8.5 h
  • 85.7% more expensive
    Fitbit Charge 4 is more expensive than the average fitness tracker (£130 vs £70).
    Fitbit Charge 4 is more expensive than the average fitness tracker (£130 vs £70).£130 vs £70

Graphic comparison of Fitbit Charge 4 and

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Third-party reviews

(Reviews last updated: June 2026)

What customers like about Fitbit Charge 4?

  • Integrated GPS allows for tracking outdoor activities without carrying a smartphone
  • Best-in-class sleep tracking providing detailed insights into sleep stages and overall sleep score
  • Active Zone Minutes feature helps users track workout intensity and reach fitness goals
  • Contactless payments are supported across all models via Fitbit Pay
  • Slim, lightweight design makes it comfortable for all-day wear and sleeping
  • Excellent battery life of up to 7 days when not using GPS

What customers dislike about Fitbit Charge 4?

  • Grayscale/monochromatic display is considered dated and difficult to read in direct sunlight
  • Battery life drops significantly to approximately 5 hours when GPS is active
  • Lack of advanced smartwatch features such as a voice assistant or on-device music storage
  • Proprietary charging cable is required and is incompatible with other Fitbit models
  • Some long-term users reported durability issues with the strap clasp and screen after a year of use
  • Spotify controls require a Premium subscription and the phone to be nearby

Expert reviews

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06/10/2020
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21/04/2020
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14/04/2020
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15/04/2020
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dcrainmaker.com
15/04/2020
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garagegymreviews.com
20/11/2024
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expertreviews.co.uk
01/12/2021
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fitandwell.com
09/06/2021
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androidcentral.com
23/04/2021
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cnet.com
12/02/2021
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techgearlab.com
14/09/2020
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techradar.com
28/09/2020
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pocket-lint.com
13/04/2020
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wareable.com
15/04/2020
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runningxpert.com
22/10/2021
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self.com
21/06/2021
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tomsguide.com
28/01/2021
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heise.de
11. Mai 2020
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chip.de
03/04/2021
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runningxpert.com
28/10/2021
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haus.de
15/03/2022
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galaxus.de
26/05/2020
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notebookcheck.com
16/06/2020
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fitforfun.de
15/02/2021
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computerbild.de
30/11/2020
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lesnumeriques.com
03/07/2020
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leclaireur.fnac.com
09/06/2020
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cnetfrance.fr
07/06/2020
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smarthealth.live
29/04/2021
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protegez-vous.ca
23/07/2020
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notebookcheck.biz
25/07/2020
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vonguru.fr
18/05/2020
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montre-cardio-gps.fr
04/08/2020
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tomsguide.fr
23/06/2020
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global.techradar.com
08/07/2021
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global.techradar.com
29/04/2020
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recensioniorologi.it
22/06/2020
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robadainformatici.it
28/10/2020
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corriere.it
29/09/2020
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tomshw.it
07/08/2020
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macitynet.it
10/05/2020
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andreagaleazzi.com
04/05/2020
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global.techradar.com
27/04/2020
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techgirl.nl
13/01/2021
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notebookcheck.nl
20/06/2020
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ct.nl
07/07/2020
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techtesters.eu
10/09/2020
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androidworld.nl
21/04/2020
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deargoodmorning.com
15/04/2020
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iphoned.nl
15/04/2020
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smarthealth.live
17/04/2020
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iculture.nl
20/04/2020
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