AmazFit T-Rex Ultra vs WHOOP Life
Compare specifications, current prices and availability. Choose up to four products from the same family.
Selected Item  AmazFit T-Rex Ultra Original price was: KSh 50,000.00.KSh 47,000.00Current price is: KSh 47,000.00. |
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At a glance
Key specifications and important differences. Full details follow below.
| Feature | AmazFit T-Rex Ultra |  WHOOP Life |
|---|---|---|
| Price | Original price was: KSh 50,000.00.KSh 47,000.00Current price is: KSh 47,000.00. | KSh 55,500.00 |
| Display | 1.39-inch AMOLED | — |
| Battery capacity | 500 mAh rated | — |
| Water resistance | 10 ATM; ISO 22810:2010 | IP68, water-resistant to 10 m; suitable for swimming and showering, not diving; ECG readings must be taken dry |
| Storage | Up to 2.3 GB available for music | — |
| Operating system | Zepp OS 3.5 | — |
| Positioning / GNSS | Built-in dual-band L1/L5 positioning; six satellite systems | — |
| Health & wellness features | 24-hour heart-rate, blood-oxygen and stress monitoring; one-tap measurement; PAI; breathing exercises; health alerts | Continuous heart rate and skin-temperature tracking; Recovery, Strain and Healthspan insights; Heart Screener with ECG, irregular-rhythm notifications and Blood Pressure Insights are region-, age- and eligibility-dependent and are not diagnostic |
Full specifications
2 of 4 products
| Specification | AmazFit T-Rex Ultra | WHOOP Life |
|---|---|---|
| Identity & design | ||
| Brand | Amazfit | WHOOP |
| Model | Amazfit T-Rex Ultra | WHOOP MG with 12-month Life membership |
| Dimensions | 47.3 × 47.3 × 13.45 mm, excluding heart-rate sensor base | 34.7 × 24 × 10.6 mm |
| Weight | 89 g without strap | Approximately 27.3 g with band |
| Build materials | 316L stainless-steel bezel, back panel, bridge and buttons; polymer-alloy middle frame | Compact matte-black sensor with brushed-metal detailing and conductive ECG clasp |
| Wrist size | 140–205 mm | — |
| Strap / band | 22 mm silicone strap with classic pin buckle | SuperKnit Luxe band with ECG-compatible conductive clasp |
| Controls / buttons | Four physical buttons; glass touchscreen | Screen-free wearable; measurements and controls are managed through the WHOOP app |
| Display | ||
| Display | 1.39-inch AMOLED | — |
| Screen resolution | 454 × 454 pixels, 326 ppi | — |
| Display protection | Glass | — |
| Display features | Up to 1,000 nits; Always-On Display; 120+ watch faces | — |
| Performance & software | ||
| Storage | Up to 2.3 GB available for music | — |
| Operating system | Zepp OS 3.5 | — |
| Connectivity | ||
| Wi-Fi | 2.4 GHz Wi-Fi | — |
| Bluetooth | Bluetooth 5.0 BLE | Bluetooth 5.0 or later required for ECG and Blood Pressure Insights |
| Positioning / GNSS | Built-in dual-band L1/L5 positioning; six satellite systems | — |
| Audio & communication | ||
| Speaker | No built-in speaker; audio through connected Bluetooth headphones | — |
| Sensors, health & fitness | ||
| Sensors | BioTracker PPG biometric sensor with SpO₂; accelerometer; gyroscope; geomagnetic sensor; barometric altimeter; ambient-light sensor | Enhanced PPG biometric sensor, accelerometer, skin-temperature sensor and ECG-ready contact pads |
| Health & wellness features | 24-hour heart-rate, blood-oxygen and stress monitoring; one-tap measurement; PAI; breathing exercises; health alerts | Continuous heart rate and skin-temperature tracking; Recovery, Strain and Healthspan insights; Heart Screener with ECG, irregular-rhythm notifications and Blood Pressure Insights are region-, age- and eligibility-dependent and are not diagnostic |
| Sleep tracking | Sleep stages including REM; naps; sleep schedule; breathing quality; sleep score | Sleep duration, stages, performance, consistency, debt and coaching through the WHOOP app |
| Sports / workout modes | 162 sports modes; smart recognition of 25 strength movements and 8 sports movements; freediving workouts | Automatic and manual activity tracking across supported workouts in the WHOOP app |
| Training & outdoor features | Offline maps and route navigation; Zepp Coach; PeakBeats; Track Run; trajectory correction; Virtual Pacer; training templates and intervals; external heart-rate belt and cycling power meter; altitude, sun, moon and tide tools | Strain, Recovery, VO2 max, training load and personalized coaching insights |
| Safety & emergency features | Storm warnings; altitude blood-oxygen reminders; abnormal heart-rate, low-SpO₂ and high-stress alerts | — |
| Diving / depth features | Outdoor and indoor freediving and spearfishing; depth and water-temperature data; rated to 30 m; EN13319 and ISO 6425 diving certifications | — |
| Battery & durability | ||
| Battery capacity | 500 mAh rated | — |
| Battery life | Typical: up to 20 days; saver: 25 days; clock: 50 days; heavy: 9 days; accuracy GPS: 28 h; automatic GPS: 46 h; power-saving GPS: 58 h; endurance GPS: 80 h; low-temperature GPS: 10 h | Up to 14 days |
| Charging | Magnetic charging base; approximately 2 hours | Magnetic Wireless PowerPack or USB-C Basic Charger; approximately 120 minutes; not compatible with WHOOP 4.0 chargers |
| Water resistance | 10 ATM; ISO 22810:2010 | IP68, water-resistant to 10 m; suitable for swimming and showering, not diving; ECG readings must be taken dry |
| Durability / certifications | Mud-resistant design; ultra-low-temperature mode down to −30 °C; SGS-certified 10 ATM testing; EN13319 and ISO 6425 diving certifications | — |
| Compatibility | ||
| Phone compatibility | Android 7.0 or later; iOS 12.0 or later | Compatible phone running the current WHOOP app; iOS 16 or later, with Bluetooth 5.0+ required for ECG and Blood Pressure Insights |
| Companion app | Zepp App | WHOOP app with included 12-month WHOOP Life membership |
| Colors | Abyss Black; Sahara | Obsidian sensor with premium SuperKnit Luxe band |
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