AmazFit T-Rex Ultra vs Amazfit T-Rex Ultra 2
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 |  Amazfit T-Rex Ultra 2 |
|---|---|---|
| Price | Original price was: KSh 50,000.00.KSh 47,000.00Current price is: KSh 47,000.00. | KSh 85,000.00 |
| Display | 1.39-inch AMOLED | 1.5-inch AMOLED |
| Battery capacity | 500 mAh rated | 870 mAh rated |
| Water resistance | 10 ATM; ISO 22810:2010 | 10 ATM; tested to ISO 22810:2010 |
| Storage | Up to 2.3 GB available for music | 64 GB total; 26.7 GB available |
| Operating system | Zepp OS 3.5 | — |
| Positioning / GNSS | Built-in dual-band L1/L5 positioning; six satellite systems | Built-in dual-band positioning; six satellite positioning systems; circularly polarised GPS antenna |
| Health & wellness features | 24-hour heart-rate, blood-oxygen and stress monitoring; one-tap measurement; PAI; breathing exercises; health alerts | 24-hour heart-rate, blood-oxygen, stress and skin-temperature monitoring; one-tap measurement; HybridCharge, BioCharge and LifeLoad energy insights; VO₂ Max and health alerts |
Full specifications
2 of 4 products
| Specification | AmazFit T-Rex Ultra | Amazfit T-Rex Ultra 2 |
|---|---|---|
| Identity & design | ||
| Brand | Amazfit | Amazfit |
| Model | Amazfit T-Rex Ultra | Amazfit T-Rex Ultra 2 |
| Dimensions | 47.3 × 47.3 × 13.45 mm, excluding heart-rate sensor base | 51 × 51 × 14.3 mm, excluding heart-rate sensor base |
| Weight | 89 g without strap | 89.2 g with strap |
| Build materials | 316L stainless-steel bezel, back panel, bridge and buttons; polymer-alloy middle frame | Fibre-reinforced polymer case; Grade 5 titanium bezel, buttons and back panel |
| Wrist size | 140–205 mm | 145–215 mm |
| Strap / band | 22 mm silicone strap with classic pin buckle | 26 mm silicone strap with classic pin buckle |
| Controls / buttons | Four physical buttons; glass touchscreen | Four physical buttons; sapphire-glass touchscreen |
| Display | ||
| Display | 1.39-inch AMOLED | 1.5-inch AMOLED |
| Screen resolution | 454 × 454 pixels, 326 ppi | 480 × 480 pixels, 322 ppi |
| Display protection | Glass | Sapphire glass |
| Display features | Up to 1,000 nits; Always-On Display; 120+ watch faces | Up to 3,000 nits peak brightness; Always-On Display |
| Performance & software | ||
| Storage | Up to 2.3 GB available for music | 64 GB total; 26.7 GB available |
| Operating system | Zepp OS 3.5 | — |
| Connectivity | ||
| Wi-Fi | 2.4 GHz Wi-Fi | 2.4 GHz Wi-Fi (802.11 b/g/n) |
| Bluetooth | Bluetooth 5.0 BLE | Bluetooth 5.2 and BLE |
| Positioning / GNSS | Built-in dual-band L1/L5 positioning; six satellite systems | Built-in dual-band positioning; six satellite positioning systems; circularly polarised GPS antenna |
| Audio & communication | ||
| Speaker | No built-in speaker; audio through connected Bluetooth headphones | Supported |
| Microphone | — | Supported |
| Calling | — | Bluetooth calling and call/text notifications through a connected smartphone |
| Sensors, health & fitness | ||
| Sensors | BioTracker PPG biometric sensor with SpO₂; accelerometer; gyroscope; geomagnetic sensor; barometric altimeter; ambient-light sensor | BioTracker 6.0 PPG biometric sensor (5 photodiodes + 2 LEDs); accelerometer; gyroscope; geomagnetic sensor; barometric altimeter; ambient-light sensor; temperature sensor |
| Health & wellness features | 24-hour heart-rate, blood-oxygen and stress monitoring; one-tap measurement; PAI; breathing exercises; health alerts | 24-hour heart-rate, blood-oxygen, stress and skin-temperature monitoring; one-tap measurement; HybridCharge, BioCharge and LifeLoad energy insights; VO₂ Max and health alerts |
| Sleep tracking | Sleep stages including REM; naps; sleep schedule; breathing quality; sleep score | Sleep HRV; sleep quality; stages including REM; daytime naps; sleep schedule; breathing quality; sleep score; RestoreIQ recovery insights |
| Sports / workout modes | 162 sports modes; smart recognition of 25 strength movements and 8 sports movements; freediving workouts | 187 sports modes; smart recognition of 25 strength-training movements and 8 sports movements; HYROX race and training modes |
| 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 | Zepp Coach; PeakBeats; lactate threshold, Training Stress Balance, Training Load and Training Effect; offline maps; on-watch route planning, automatic rerouting, POI search, turn-by-turn navigation; golf maps; external heart-rate, running-power and cycling sensors |
| Safety & emergency features | Storm warnings; altitude blood-oxygen reminders; abnormal heart-rate, low-SpO₂ and high-stress alerts | Two-colour flashlight with SOS/Boost modes; storm, high-altitude blood-oxygen and route-deviation 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 | Freediving and recreational scuba-diving support to 45 m; EN13319:2000, ISO 6425:2018 and GB/T 18828-2022 diving certifications; Bühlmann ZHL-16C decompression model |
| Battery & durability | ||
| Battery capacity | 500 mAh rated | 870 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 | Typical use: up to 30 days; heavy use: 15 days; AOD: 10 days; accurate GPS: 50 h; power-saving GPS: 90 h; maximum GPS: 177 h; low-temperature mode with GPS: 40 h |
| Charging | Magnetic charging base; approximately 2 hours | Magnetic charging head; DC 5 V 1.5 A maximum input |
| Water resistance | 10 ATM; ISO 22810:2010 | 10 ATM; tested to ISO 22810:2010 |
| Durability / certifications | Mud-resistant design; ultra-low-temperature mode down to −30 °C; SGS-certified 10 ATM testing; EN13319 and ISO 6425 diving certifications | MIL-STD-810H-2019; low-temperature operation down to −30 °C; SGS water-resistance test; certified diving standards |
| Compatibility | ||
| Phone compatibility | Android 7.0 or later; iOS 12.0 or later | Android 7.0 or later; iOS 15.0 or later |
| Companion app | Zepp App | Zepp App |
| Colors | Abyss Black; Sahara | Black Magma |
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