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Wearable comparison

Fitbit Charge 6 vs Google Fitbit Air

Compare battery life, health tracking, display and fit.

Compared products
01Selected
Fitbit Charge 6

Fitbit Charge 6

  • 30 g.
  • OLED display.
  • Up to 7 days.
  • Bluetooth LE.
  • Water resistant to 50 m.
KSh 20,000Out of Stock
02
Google Fitbit Air

Google Fitbit Air

  • Screenless tracker.
  • Up to 7 days.
  • Bluetooth 5.0.
  • Water resistant to 50 m.
  • Weighs 12 g.
KSh 20,000In Stock
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Huawei Watch Fit 5KSh 18,500
Samsung Galaxy Watch FEKSh 19,500
Amazfit GTR 3 ProKSh 20,000
Amazfit GTS 4KSh 18,500
Fitbit Inspire 3KSh 14,000
Huawei Watch Fit 4 ProKSh 21,500
Xiaomi Watch S3KSh 18,000
2 of 4 products

Our quick verdict

The Fitbit Charge 6, a fitness band with a small screen, takes ECG heart-rhythm readings and has a sturdier aluminium build, while the Google Fitbit Air, a screenless tracker you read in the Google Health app, is lighter to wear all day and slimmer.

Portability

Fitbit Charge 6
30 g
Google Fitbit Air
12 g

Display

Fitbit Charge 6
OLED display
Google Fitbit Air
Screenless tracker

Connections

Fitbit Charge 6
Bluetooth LE
Google Fitbit Air
Bluetooth 5.0

Sensors

Fitbit Charge 6
Optical heart-rate monitor, 3-axis accelerometer
Google Fitbit Air
Optical heart-rate sensor, red and infrared SpO₂ sensors

Charging

Fitbit Charge 6
Proprietary charging cable
Google Fitbit Air
USB-C charging cable

Key differences

The main differences to help you choose.

Fitbit Charge 6

  • Screen on the wrist for the time, notifications and workout stats.
  • ECG heart-rhythm readings.
  • Aluminium case (vs plastic case).
  • Charging: Proprietary charging cable.

Google Fitbit Air

  • Screenless: worn day and night, with results read in the Google Health app.
  • Lighter: 12 g (vs 30 g).
  • Slimmer: 8.3 mm thick (vs 11.2 mm).
  • Charging: USB-C charging cable.

What matters most to you?

Choose any priorities

How each product answers the questions buyers ask most. Tick a topic to add it, untick one to hide it.

6 priorities selected.
How each product answers the selected priorities
PriorityFitbit Charge 6Google Fitbit Air
Battery lifeUp to 7 daysUp to 7 days
Portability30 g12 g
DisplayOLED displayScreenless tracker
ConnectionsBluetooth LEBluetooth 5.0
SensorsOptical heart-rate monitor, 3-axis accelerometerOptical heart-rate sensor, red and infrared SpO₂ sensors
ChargingProprietary charging cableUSB-C charging cable

Detailed comparison

Explore the full specifications, section by section.

Display

Display specifications comparison
SpecificationFitbit Charge 6Google Fitbit Air
DisplayAMOLEDScreenless tracker
Display protectionCorning Gorilla Glass 3Not applicable
Display featuresAlways-on display—
Screen resolution——

Connectivity

Connectivity specifications comparison
SpecificationFitbit Charge 6Google Fitbit Air
BluetoothBluetooth LEBluetooth LE
NFCSupported—
Positioning / GPSBuilt-in GPS; GLONASS—

Identity & design

Identity & design specifications comparison
SpecificationFitbit Charge 6Google Fitbit Air
BrandFitbitFitbit
ModelFitbit Charge 6Google Fitbit Air
Dimensions36.73 × 23.09 × 11.20 mm34.9 × 17 × 8.3 mm without band
Weight30 g5.2 g without band; 12 g with band
Build materialsAluminum; Corning Gorilla Glass 3Recycled polycarbonate; PBT plastic
Wrist sizeSmall: 130–170 mm; large: 170–210 mmTextile: 130–210 mm; silicone small: 130–175 mm; silicone large: 165–210 mm
Strap / bandSilicone infinity band; loop-and-peg closureTextile band with stainless-steel buckle; optional silicone bands
Controls / buttons—Screenless tracker with vibration feedback and an LED status light; configuration and detailed results are managed in the Google Health app.

Health & fitness

Health & fitness specifications comparison
SpecificationFitbit Charge 6Google Fitbit Air
SensorsOptical heart-rate monitor; 3-axis accelerometer; red and infrared SpO₂ sensors; temperature sensor; ambient light; ECG and EDA electrical sensors; vibration motorOptical heart-rate sensor; red and infrared SpO₂ sensors; temperature sensor; 3-axis accelerometer; gyroscope
Health & wellness featuresHeart rate; blood oxygen; skin-temperature variation; EDA stress tracking; activity trackingHeart rate; blood oxygen; skin-temperature variation; activity tracking
Sleep trackingSleep stages; sleep scoreSleep stages; sleep score

Battery & durability

Battery & durability specifications comparison
SpecificationFitbit Charge 6Google Fitbit Air
Battery lifeUp to 7 daysUp to 7 days
ChargingProprietary charging cableUSB-C charging cable
Water resistanceWater resistant to 50 mWater resistant to 50 m

Compatibility

Compatibility specifications comparison
SpecificationFitbit Charge 6Google Fitbit Air
Phone compatibilityAndroid 11 or later; iOS 16.4 or later; Google AccountAndroid 11 or later; iOS 16.4 or later; Google Account
Companion appGoogle HealthGoogle Health
ColorsCoral / Champagne Gold Aluminum; Porcelain / Silver Aluminum; Obsidian / Black AluminumObsidian; Berry; Lavender; Fog

Sensors, health & fitness

Sensors, health & fitness specifications comparison
SpecificationFitbit Charge 6Google Fitbit Air
Sports / workout modes—Automatic detection for walking, running, cycling, sports, elliptical, rowing machine and stationary bike; manual and app-started workout tracking is also supported.
Training & outdoor features—Live heart-rate broadcast to compatible gym equipment, Cardio Load, Active Zone Minutes, phone-connected GPS and post-workout pace and heart-rate zones in Workout Intensity Map.

Additional specifications

Additional specifications specifications comparison
SpecificationFitbit Charge 6Google Fitbit Air
Vibration motor—Vibration motor
Charging time—90 minutes; 5-minute charge for 1 day
Movement sensors—3-axis accelerometer; gyroscope
Bluetooth and Wi-Fi—Bluetooth 5.0; Bluetooth LE sync
Packing list—Tracker; wristband; USB-C charging cable
strap material—Textile; stainless-steel buckle
temperature monitoring—Skin-temperature variation
offline storage—7 days of minute-by-minute motion data; 30 days of daily totals
Bluetooth—Bluetooth 5.0 BLE; syncing range up to 9 m; synchronization requires an internet connection and phone location permission.
Positioning / GPS—Phone-connected GPS through the Google Health app; Fitbit Air does not have built-in GPS.
Health & wellness features—24/7 heart rate, resting heart rate, heart-rate variability, breathing rate, blood oxygen (SpO2), skin-temperature variation, steps, distance, calories, Active Zone Minutes, Cardio Load and Readiness; Google Health also supports weight, nutrition, water, mood and cycle logging.
Sleep tracking—Sleep Score, sleep schedule, sleep duration and sleep stages; Smart Wake uses sleep movement and heart rate to wake during a lighter sleep stage; adaptive sleep coaching requires Google Health Premium.
Smart features / notifications—Vibration and LED battery/status alerts, optional phone notifications, Fast Pair on Android and multi-device support with a compatible Pixel Watch.
Charging—Magnetic USB-C charging cable; 0–100% in 90 minutes; a 5-minute quick charge provides up to one day of battery life.
Strap / band—Textile and polyurethane band with stainless-steel buckle; silicone small and large bands are also supported.
Colors—Obsidian with Matte Black buckle; Berry with Polished Champagne Gold buckle; Lavender or Fog with Polished Silver buckle; Stephen Curry Rye/Pyrite and Pokémon Sleep Sleepy Blue special editions.

Similarities

  • Both are water resistant to 50 m.
  • Both are rated for up to 7 days on a charge.
  • Both connect over Bluetooth.
  • Both are rated for up to 7 days.
  • Both use 3-axis (sensors).
  • Same sleep tracking: sleep stages.

In summary

For most buyers the Fitbit Charge 6 is the better buy; the Google Fitbit Air makes sense if you want a screenless tracker.

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In-stock alternatives

Fitbit Inspire 3For Fitbit Charge 6Fitbit Inspire 3View product ↗Samsung Galaxy Watch FEFor Fitbit Charge 6Samsung Galaxy Watch FEView product ↗Huawei Watch GT 5For Google Fitbit AirHuawei Watch GT 5View product ↗Huawei Watch Fit 4 ProFor Google Fitbit AirHuawei Watch Fit 4 ProView product ↗

Related comparisons

Fitbit Charge 6Huawei Watch Fit 5Samsung Galaxy Watch FEFitbit Charge 6Amazfit GTR 3 ProFitbit Charge 6Amazfit GTS 4Fitbit Charge 6Fitbit Charge 6Fitbit Inspire 3Fitbit Charge 6Huawei Watch Fit 4 ProFitbit Charge 6Xiaomi Watch S3
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