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Wearable comparison

Google Fitbit Air vs OPPO Watch S

Compare battery life, health tracking, display and fit.

Compared products
01Selected
Google Fitbit Air

Google Fitbit Air

  • Screenless tracker.
  • Up to 7 days.
  • Bluetooth 5.0.
  • Water resistant to 50 m.
  • Weighs 12 g.
KSh 21,000In Stock
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02
OPPO Watch S

OPPO Watch S

  • Screen: 464 × 464 pixels; 317 ppi.
  • BES2800BP MCU processor.
  • 4 GB storage in this version.
  • Runs ColorOS Watch 7.1.
  • 339 mAh battery.
KSh 25,000In Stock
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2 spaces available

Huawei Watch GT 5KSh 21,500
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Huawei Watch Fit 4 ProKSh 21,500
Huawei Watch Fit 5KSh 18,500
2 of 4 products

Our quick verdict

The OPPO Watch S, a smartwatch with a 1.46-inch OLED screen, lasts longer between charges (10 days), takes ECG heart-rhythm readings and has a sturdier stainless steel build, while the Google Fitbit Air, a screenless tracker you read in the Google Health app, is lighter to wear all day.

Battery life

Google Fitbit Air
Up to 7 days
OPPO Watch S
339 mAh battery

Portability

Google Fitbit Air
12 g
OPPO Watch S
35 g

Display

Google Fitbit Air
Screenless tracker
OPPO Watch S
1.46-inch OLED display, 317 ppi

Software

Google Fitbit Air
Google Health
OPPO Watch S
ColorOS Watch 7.1

Connections

Google Fitbit Air
Bluetooth 5.0
OPPO Watch S
Bluetooth 5.2

Key differences

The main differences to help you choose.

Google Fitbit Air

  • Lighter: 12 g (vs 35 g).
  • Screenless: worn day and night, with results read in the Google Health app.
  • Lower price: KSh 21,000 (vs KSh 25,000).

OPPO Watch S

  • Longer battery life: up to 10 days (vs 7).
  • Screen on the wrist for the time, notifications and workout stats.
  • ECG heart-rhythm readings.
  • Stainless steel case (vs plastic case).
  • Newer Bluetooth 5.2 (vs 5.0).

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
PriorityGoogle Fitbit AirOPPO Watch S
Battery lifeUp to 7 days339 mAh battery
Portability12 g35 g
DisplayScreenless tracker1.46-inch OLED display, 317 ppi
SoftwareGoogle HealthColorOS Watch 7.1
ConnectionsBluetooth 5.0Bluetooth 5.2
Water resistanceWater resistant to 50 mIP68 water and dust resistance

Detailed comparison

Explore the full specifications, section by section.

Display

Display specifications comparison
SpecificationGoogle Fitbit AirOPPO Watch S
DisplayScreenless tracker1.46-inch AMOLED
Screen resolutionNot applicable464 × 464 pixels; 317 ppi
Display protection—Glass
Display features—3000 nits (peak)

Connectivity

Connectivity specifications comparison
SpecificationGoogle Fitbit AirOPPO Watch S
BluetoothBluetooth LEBluetooth 5.2; Classic Bluetooth and BLE
Network / cellular—No cellular connectivity
SIM / eSIM—No
Wi-Fi—Unsupported
NFC—Non-encrypted access cards
Positioning / GNSS—Dual-band L1 + L5; GPS; BeiDou; Galileo; GLONASS; QZSS

Identity & design

Identity & design specifications comparison
SpecificationGoogle Fitbit AirOPPO Watch S
BrandFitbitOPPO
ModelGoogle Fitbit AirOPPO Watch S
Dimensions34.9 × 17 × 8.3 mm without band44.98 × 44.98 × 8.9 mm, excluding lugs and optical sensor
Weight5.2 g without band; 12 g with band35 g without strap; 59 g with fluororubber strap; 48 g with woven strap
Build materialsRecycled polycarbonate; PBT plasticStainless-steel frame; PA with 55% fibreglass back
Wrist sizeTextile: 130–210 mm; silicone small: 130–175 mm; silicone large: 165–210 mm140–210 mm
Strap / bandTextile band with stainless-steel buckle; optional silicone bandsBlack fluororubber or tri-colour woven strap; stainless-steel buckle
Controls / buttonsScreenless tracker with vibration feedback and an LED status light; configuration and detailed results are managed in the Google Health app.—
Announced—2025, October 16

Sensors, health & fitness

Sensors, health & fitness specifications comparison
SpecificationGoogle Fitbit AirOPPO Watch S
SensorsOptical heart-rate sensor; red and infrared SpO₂ sensors; temperature sensor; 3-axis accelerometer; gyroscopeAccelerometer; gyroscope; geomagnetic sensor; barometer; optical heart-rate sensor; optical SpO₂ sensor; ECG sensor; wrist-temperature sensor; ambient-light sensor
Health & wellness featuresHeart rate; blood oxygen; skin-temperature variation; activity tracking60-second Wellness Overview; heart rate and alerts; SpO₂ and alerts; Mind and Body; cycle tracking; wrist temperature; breathing exercises
Sleep trackingSleep stages; sleep scoreDeep, light and REM sleep; awake time; respiratory rate; sleep SpO₂; sleep score
Sports / workout modesAutomatic detection for walking, running, cycling, sports, elliptical, rowing machine and stationary bike; manual and app-started workout tracking is also supported.100+ sports modes
Training & outdoor featuresLive 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.Running coach; aerobic training effect; cardiorespiratory capacity; recovery time; heart-rate recovery; track running
Safety & emergency features—Fall detection

Battery & durability

Battery & durability specifications comparison
SpecificationGoogle Fitbit AirOPPO Watch S
Battery lifeUp to 7 daysUp to 10 days maximum; 7 days typical; 4 days AOD
ChargingUSB-C charging cableIntegrated watch charging cable
Water resistanceWater resistant to 50 m5 ATM; IP68
Battery capacity—339 mAh typical; 330 mAh rated

Compatibility

Compatibility specifications comparison
SpecificationGoogle Fitbit AirOPPO Watch S
Phone compatibilityAndroid 11 or later; iOS 16.4 or later; Google AccountAndroid 9 or later; iOS 14 or later
Companion appGoogle Health—
ColorsObsidian; Berry; Lavender; FogPhantom Black; Silver Gleam

Additional specifications

Additional specifications specifications comparison
SpecificationGoogle Fitbit AirOPPO Watch S
Vibration motorVibration motor—
Charging time90 minutes; 5-minute charge for 1 day—
Movement sensors3-axis accelerometer; gyroscope—
Bluetooth and Wi-FiBluetooth 5.0; Bluetooth LE sync—
Packing listTracker; wristband; USB-C charging cableWatch with strap; integrated charging cable; user guide; safety and warranty booklet
strap materialTextile; stainless-steel buckle—
temperature monitoringSkin-temperature variation—
offline storage7 days of minute-by-minute motion data; 30 days of daily totals—
BluetoothBluetooth 5.0 BLE; syncing range up to 9 m; synchronization requires an internet connection and phone location permission.—
Positioning / GPSPhone-connected GPS through the Google Health app; Fitbit Air does not have built-in GPS.—
Health & wellness features24/7 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 trackingSleep 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 / notificationsVibration and LED battery/status alerts, optional phone notifications, Fast Pair on Android and multi-device support with a compatible Pixel Watch.—
ChargingMagnetic USB-C charging cable; 0–100% in 90 minutes; a 5-minute quick charge provides up to one day of battery life.—
Strap / bandTextile and polyurethane band with stainless-steel buckle; silicone small and large bands are also supported.—
ColorsObsidian 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.—
Case material—Stainless steel
Pixels per inch—317 ppi
Peak brightness—600 nits default maximum; 1,500 nits HBM; 3,000 nits peak in supported workout modes
Smart recognition—Running; brisk walking; cycling; swimming; rowing machine; elliptical
Release status—Available. Released 2025, October 22
Card slot—No
Camera—No
3.5 mm headphone jack—No
USB—No
Radio—No
Network speed—No

Performance & software

Performance & software specifications comparison
SpecificationGoogle Fitbit AirOPPO Watch S
Processor—BES2800BP MCU
Storage—4 GB eMMC
Operating system—ColorOS Watch 7.1

Audio & communication

Audio & communication specifications comparison
SpecificationGoogle Fitbit AirOPPO Watch S
Speaker—Supported
Microphone—Supported
Calling—Bluetooth calling

Similarities

  • Both are water resistant to 50 m.
  • Both connect over Bluetooth.
  • Both go up to 210 mm (wrist size).

In summary

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

Back to compared products ↑

In-stock alternatives

Huawei Watch GT 5For Google Fitbit AirHuawei Watch GT 5View product ↗Huawei Watch Fit 4 ProFor Google Fitbit AirHuawei Watch Fit 4 ProView product ↗Amazfit Active 3 PremiumFor OPPO Watch SAmazfit Active 3 PremiumView product ↗Amazfit Active 2 Premium RoundFor OPPO Watch SAmazfit Active 2 Premium RoundView product ↗

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