Amazfit Active 3 Premium vs Fitbit Sense 2
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At a glance
Key specifications and important differences. Full details follow below.
| Feature |  Amazfit Active 3 Premium |  Fitbit Sense 2 |
|---|---|---|
| Price | KSh 24,000.00 | KSh 29,500.00 |
| Display | 1.32-inch AMOLED touchscreen | AMOLED |
| Battery capacity | 365 mAh rated | — |
| Water resistance | 5 ATM; suitable for splashes, showering and swimming, but not hot showers or saunas | Water resistant to 50 m for suitable shallow-water use |
| Positioning / GNSS | Built-in five-satellite positioning | Built-in GPS and GLONASS |
| Health & wellness features | 24-hour heart rate, blood oxygen, stress, skin-temperature, BioCharge, PAI and heart-rate recovery; wellness measurements are not intended for medical diagnosis | Heart rate, blood oxygen, cEDA body response, ECG-compatible, skin-temperature variation and stress features; availability varies and not intended for diagnosis |
Full specifications
2 of 4 products
| Specification | Amazfit Active 3 Premium | Fitbit Sense 2 |
|---|---|---|
| Identity & design | ||
| Brand | Amazfit | Fitbit |
| Model | Active 3 Premium | Fitbit Sense 2 |
| Announced | — | August 2022 |
| Dimensions | 45 × 45 × 11 mm (heart-rate sensor base excluded) | 40.5 × 40.5 × 11.2 mm |
| Weight | 38 g without strap | 37.64 g |
| Build materials | Stainless-steel frame with sapphire-glass touchscreen | Aluminum watch case and buckle; Corning Gorilla Glass 3 |
| Wrist size | — | Small: 130–180 mm; large: 165–220 mm; both sizes included |
| Strap / band | 20 mm silicone strap with classic pin buckle | Flexible classic sport band; small and large sizes included |
| Controls / buttons | Four physical buttons and touchscreen | Side button and AMOLED touchscreen |
| Display | ||
| Display | 1.32-inch AMOLED touchscreen | AMOLED |
| Screen resolution | 466 × 466 pixels, 353 ppi | — |
| Display protection | Sapphire glass | 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 5.3 BLE | Bluetooth Low Energy |
| NFC | — | Built-in NFC; supported payment features vary by country and bank |
| Positioning / GNSS | Built-in five-satellite positioning | Built-in GPS and GLONASS |
| Audio & communication | ||
| Speaker | Built-in speaker | Built-in speaker, rated 75 dB SPL at 10 cm |
| Microphone | Built-in microphone | Built-in microphone |
| Calling | Bluetooth calling when paired with a compatible phone | On-wrist Bluetooth calling features depend on phone, app and region support |
| Sensors, health & fitness | ||
| Sensors | BioTracker PPG biometric sensor (5PD + 2LED), accelerometer, gyroscope, geomagnetic sensor, barometric altimeter, ambient-light sensor and temperature sensor | 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 |
| Health & wellness features | 24-hour heart rate, blood oxygen, stress, skin-temperature, BioCharge, PAI and heart-rate recovery; wellness measurements are not intended for medical diagnosis | Heart rate, blood oxygen, cEDA body response, ECG-compatible, skin-temperature variation and stress features; availability varies and not intended for diagnosis |
| Sleep tracking | Sleep HRV, stages including REM, naps, sleep schedule, breathing quality and sleep score | Sleep stages, sleep score and overnight wellness tracking |
| Sports / workout modes | More than 170 sports modes, including HYROX and strength training with smart recognition | Exercise tracking with SmartTrack automatic exercise recognition; steps, distance, calories and Cardio Fitness Score |
| Training & outdoor features | Built-in running workouts, Zepp Coach plans, lactate threshold, running power, ground-contact time, Track Run, virtual pacer, offline OSM maps and compatible workout peripherals | — |
| Battery & durability | ||
| Battery capacity | 365 mAh rated | — |
| Battery life | Up to 12 days typical use, 7 days heavy use, 4 days AOD, 24 hours continuous GPS or 76 hours power-saving GPS | More than 6 days; up to 5 hours with continuous GPS; always-on display, SpO2 and cEDA increase power use |
| Charging | Magnetic charging head; USB-C cable is not included | Proprietary charging cable; about one day of battery from 12 minutes of fast charging |
| Water resistance | 5 ATM; suitable for splashes, showering and swimming, but not hot showers or saunas | Water resistant to 50 m for suitable shallow-water use |
| Durability / certifications | ISO 22810:2010 water-resistance testing; TUV-SUD report 68.189.26.01120.01 | 5 ATM under ISO 22810:2010 |
| Compatibility | ||
| Phone compatibility | Android 7.0 or later; iOS 14.0 or later | Android 11.0 or later; iOS 16.4 or later; Bluetooth LE and internet required |
| Companion app | Zepp app | Google Health app |
| Colors | Apex Silver, Atlas Blue or Aero White | Shadow Grey / Graphite Aluminum; Lunar White / Platinum Aluminum; Blue Mist / Soft Gold Aluminum |
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