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Wearable comparison

Amazfit Helio Strap vs Google Fitbit Air

Compare battery life, health tracking, display and fit.

Compared products
01Selected
Amazfit Helio Strap

Amazfit Helio Strap

  • 20 g.
  • 232 mAh battery capacity.
  • Screenless.
  • Bluetooth 5.2.
  • 5 ATM.
KSh 22,000Out 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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Fitbit EdgeKSh 28,000
AmazFit BalanceKSh 22,000
Samsung Galaxy Watch 7KSh 22,500
Amazfit Active 2 Premium RoundKSh 22,000
Xiaomi Watch S4 41mmKSh 23,360
Amazfit GTR 3 ProKSh 20,000
Apple Watch Series 8KSh 50,000
2 of 4 products

Our quick verdict

Of these two screenless trackers, the Amazfit Helio Strap lasts longer between charges (10 days), gives daily BioCharge energy levels and syncs with apps such as Strava, while the Google Fitbit Air is lighter to wear all day.

Battery life

Amazfit Helio Strap
232 mAh battery
Google Fitbit Air
Up to 7 days

Portability

Amazfit Helio Strap
20 g
Google Fitbit Air
12 g

Display

Amazfit Helio Strap
Screenless
Google Fitbit Air
Screenless tracker

Connections

Amazfit Helio Strap
Bluetooth 5.2
Google Fitbit Air
Bluetooth 5.0

Water resistance

Amazfit Helio Strap
5 ATM
Google Fitbit Air
Water resistant to 50 m

Key differences

The main differences to help you choose.

Amazfit Helio Strap

  • Longer battery life: up to 10 days (vs 7).
  • Daily BioCharge energy levels.
  • Syncs with third-party apps such as Strava and Apple Health.
  • Newer Bluetooth 5.2 (vs 5.0).
  • Charging: Magnetic charging head.

Google Fitbit Air

  • Lighter: 12 g (vs 20 g).
  • Slimmer: 8.3 mm thick (vs 10.59 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.

More topicsFewer topics
6 priorities selected.
How each product answers the selected priorities
PriorityAmazfit Helio StrapGoogle Fitbit Air
Battery life232 mAh batteryUp to 7 days
Portability20 g12 g
DisplayScreenlessScreenless tracker
ConnectionsBluetooth 5.2Bluetooth 5.0
Water resistance5 ATMWater resistant to 50 m
SensorsBioTracker 6.0 PPG, 5 PD + 2 LEDOptical heart-rate sensor, red and infrared SpO₂ sensors

Detailed comparison

Explore the full specifications, section by section.

Display

Display specifications comparison
SpecificationAmazfit Helio StrapGoogle Fitbit Air
DisplayScreenlessScreenless tracker
Screen resolutionNot applicableNot applicable
Display protection——
Display features——

Connectivity

Connectivity specifications comparison
SpecificationAmazfit Helio StrapGoogle Fitbit Air
BluetoothBluetooth 5.2 BLEBluetooth LE

Identity & design

Identity & design specifications comparison
SpecificationAmazfit Helio StrapGoogle Fitbit Air
BrandAmazfitFitbit
ModelAmazfit Helio StrapGoogle Fitbit Air
Dimensions33.97 × 24.3 × 10.59 mm without sensor34.9 × 17 × 8.3 mm without band
Weight20 g5.2 g without band; 12 g with band
Build materialsFibre-reinforced polymerRecycled polycarbonate; PBT plastic
Wrist size145–205 mmTextile: 130–210 mm; silicone small: 130–175 mm; silicone large: 165–210 mm
Strap / band22 mm nylon; hook-and-loop fasteningTextile band with stainless-steel buckle; optional silicone bands
Controls / buttonsScreen-free smart band with indicator lights; controls and data are managed through the Zepp appScreenless tracker with vibration feedback and an LED status light; configuration and detailed results are managed in the Google Health app.

Sensors, health & fitness

Sensors, health & fitness specifications comparison
SpecificationAmazfit Helio StrapGoogle Fitbit Air
SensorsBioTracker 6.0 PPG; 5 PD + 2 LED; accelerometer; gyroscope; temperatureOptical heart-rate sensor; red and infrared SpO₂ sensors; temperature sensor; 3-axis accelerometer; gyroscope
Health & wellness featuresBioCharge energy levels; continuous heart rate per second; SpO₂; stress; PAI; heart-rate recoveryHeart rate; blood oxygen; skin-temperature variation; activity tracking
Sleep trackingSleep HRV; sleep stages including REM; naps; sleep schedule; breathing quality; sleep scoreSleep stages; sleep score
Sports / workout modes50+ sports modesAutomatic detection for walking, running, cycling, sports, elliptical, rowing machine and stationary bike; manual and app-started workout tracking is also supported.
Training & outdoor featuresPeakBeats; real-time Bluetooth heart-rate broadcast; offline heart-rate storage for 21 days; heart-rate sync to compatible watchesLive 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.

Battery & durability

Battery & durability specifications comparison
SpecificationAmazfit Helio StrapGoogle Fitbit Air
Battery capacity232 mAh rated—
Battery lifeUp to 10 days typical useUp to 7 days
ChargingMagnetic charging headUSB-C charging cable
Water resistance5 ATMWater resistant to 50 m

Compatibility

Compatibility specifications comparison
SpecificationAmazfit Helio StrapGoogle Fitbit Air
Phone compatibilityAndroid 7 or later; iOS 15 or laterAndroid 11 or later; iOS 16.4 or later; Google Account
Companion appZeppGoogle Health
ColorsBlackObsidian; Berry; Lavender; Fog

Additional specifications

Additional specifications specifications comparison
SpecificationAmazfit Helio StrapGoogle Fitbit Air
Case materialFibre-reinforced polymer—
Packing listSmart band and strap assembled; magnetic charging head; instruction manualTracker; wristband; USB-C charging cable
Smart recognition25 strength-training movements—
Third-party fitness appsStrava; adidas Running; TrainingPeaks; komoot; Relive; Google Fit; Apple Health—
Vibration motorRotor motorVibration motor
Charging timeLess than 2 hours from empty90 minutes; 5-minute charge for 1 day
Smart recognitionRecognizes 25 strength-training movements—
Offline data storageStores up to 21 days of offline heart-rate data—
Real-time heart-rate broadcastSupported; heart rate can be synchronized to compatible third-party smartwatches—
Workout statusPeakBeats training-status system—
Energy, load and readiness featuresBioCharge energy-level tracking—
Other health featuresPAI health assessment and heart-rate recovery—
Third-party fitness appsStrava, TrainingPeaks, adidas Running, Runna, komoot, Relive, Google Fit and Apple Health; availability varies by region and platform—
Packing listSmart band and strap assembled, magnetic charging head without cable, and instruction manual—
Packaging materialsMade with 100% recyclable materials—
Movement sensors—3-axis accelerometer; gyroscope
Bluetooth and Wi-Fi—Bluetooth 5.0; Bluetooth LE sync
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 have a plastic case.
  • Both are water resistant to 50 m.
  • Both connect over Bluetooth.

In summary

For most buyers the Amazfit Helio Strap is the better buy; the Google Fitbit Air makes sense if you want a lighter tracker for all-day wear.

Back to compared products ↑

In-stock alternatives

Amazfit Active 2 Premium RoundFor Amazfit Helio StrapAmazfit Active 2 Premium RoundView product ↗Xiaomi Watch S4For Amazfit Helio StrapXiaomi Watch S4View product ↗Samsung Galaxy Watch FEFor Google Fitbit AirSamsung Galaxy Watch FEView product ↗Huawei Watch GT 5For Google Fitbit AirHuawei Watch GT 5View product ↗

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