Fitbit Sense 2 vs Google Fitbit Air
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At a glance
Key specifications and important differences. Full details follow below.
| Feature |  Fitbit Sense 2 |  Google Fitbit Air |
|---|---|---|
| Price | KSh 29,500.00 | KSh 21,500.00 |
| Display | AMOLED | — |
| Water resistance | Water resistant to 50 m for suitable shallow-water use | Water-resistant to 50 m; dry the band after exposure to water |
| Positioning / GNSS | Built-in GPS and GLONASS | — |
| Health & wellness features | Heart rate, blood oxygen, cEDA body response, ECG-compatible, skin-temperature variation and stress features; availability varies and not intended for diagnosis | Heart rate, SpO2, skin-temperature variation and fitness tracking; wellness data is not a medical diagnosis |
Full specifications
2 of 4 products
| Specification | Fitbit Sense 2 | Google Fitbit Air |
|---|---|---|
| Identity & design | ||
| Brand | Fitbit | — |
| Model | Fitbit Sense 2 | Fitbit Air |
| Announced | August 2022 | — |
| Dimensions | 40.5 × 40.5 × 11.2 mm | 34.9 × 17 × 8.3 mm without band |
| Weight | 37.64 g | 5.2 g without band; 12 g with band |
| Build materials | Aluminum watch case and buckle; Corning Gorilla Glass 3 | Recycled polycarbonate and PBT plastic tracker housing |
| Wrist size | Small: 130–180 mm; large: 165–220 mm; both sizes included | 130–210 mm textile; 130–175 mm small silicone or 165–210 mm large silicone |
| Strap / band | Flexible classic sport band; small and large sizes included | Textile and polyurethane band with stainless-steel buckle; silicone small and large bands are also supported. |
| Controls / buttons | Side button and AMOLED touchscreen | Screenless tracker with vibration feedback and an LED status light; configuration and detailed results are managed in the Google Health app. |
| Display | ||
| Display | AMOLED | — |
| Display protection | Corning Gorilla Glass 3 | — |
| Display features | Always-on display supported; increases power use | — |
| Connectivity | ||
| Wi-Fi | Wi-Fi hardware present but deactivated and cannot be enabled | — |
| Bluetooth | Bluetooth Low Energy | Bluetooth 5.0 BLE; syncing range up to 9 m; synchronization requires an internet connection and phone location permission. |
| NFC | Built-in NFC; supported payment features vary by country and bank | — |
| Positioning / GNSS | Built-in GPS and GLONASS | — |
| Audio & communication | ||
| Speaker | Built-in speaker, rated 75 dB SPL at 10 cm | — |
| Microphone | Built-in microphone | — |
| Calling | On-wrist Bluetooth calling features depend on phone, app and region support | — |
| Sensors, health & fitness | ||
| Sensors | Multi-path optical heart-rate sensor; cEDA skin-conductance sensor; multipurpose electrical sensors compatible with ECG and EDA apps; red and infrared SpO₂ sensors; gyroscope; altimeter; 3-axis accelerometer; skin-temperature sensor; ambient-light sensor | Optical heart-rate sensor, red and infrared SpO2 sensors, and skin-temperature sensor |
| Health & wellness features | Heart rate, blood oxygen, cEDA body response, ECG-compatible, skin-temperature variation and stress features; availability varies and not intended for diagnosis | Heart rate, SpO2, skin-temperature variation and fitness tracking; wellness data is not a medical diagnosis |
| Sleep tracking | Sleep stages, sleep score and overnight wellness tracking | Sleep duration and health insights through Google Health |
| Sports / workout modes | Exercise tracking with SmartTrack automatic exercise recognition; steps, distance, calories and Cardio Fitness Score | Automatic and app-started workout tracking |
| 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. |
| Battery & durability | ||
| Battery life | More than 6 days; up to 5 hours with continuous GPS; always-on display, SpO2 and cEDA increase power use | Up to 7 days |
| Charging | Proprietary charging cable; about one day of battery from 12 minutes of fast charging | USB-C charging cable |
| Water resistance | Water resistant to 50 m for suitable shallow-water use | Water-resistant to 50 m; dry the band after exposure to water |
| Durability / certifications | 5 ATM under ISO 22810:2010 | — |
| Compatibility | ||
| Phone compatibility | Android 11.0 or later; iOS 16.4 or later; Bluetooth LE and internet required | Google Account and Google Health app required; Android 11.0+ or iOS 16.4+ |
| Companion app | Google Health app | Google Health app |
| Colors | Shadow Grey / Graphite Aluminum; Lunar White / Platinum Aluminum; Blue Mist / Soft Gold Aluminum | Obsidian, Berry, Lavender or Fog; special editions vary |
| Additional specifications | ||
| Vibration motor | — | Vibration motor |
| Charging time | — | 90 minutes; 5-minute quick charge provides up to 1 day |
| Movement sensors | — | 3-axis accelerometer and gyroscope |
| Bluetooth and Wi-Fi | — | Bluetooth 5.0; Bluetooth LE sync up to 9 m |
| Packing list | — | Google Fitbit Air tracker, wristband and USB-C charging cable |
| Smart recognition | — | Automatically detects common activities |
| Energy, load and readiness features | — | Personalized insights available through Google Health and optional Google Health Premium |
| strap material | — | Textile performance band with stainless-steel buckle; silicone bands optional |
| temperature monitoring | — | Skin-temperature variation in the Google Health app |
| offline storage | — | 7 days of detailed minute-by-minute motion data and 30 days of daily totals |
| packaging materials | — | 100% plastic-free packaging |
| 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. |
| 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. |
| 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. |
| 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. |
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