Apple Watch Ultra vs Amazfit T-Rex Ultra 2
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Apple Watch SE 2 Price range: KSh 28,500.00 through KSh 32,000.00
WHOOP Peak 5.0 SensorKSh 45,000.00
Amazfit T-Rex 3 Pro Price range: KSh 55,000.00 through KSh 65,000.00
Samsung Galaxy Watch Ultra 2025KSh 43,500.00
At a glance
Key specifications and important differences. Full details follow below.
| Feature |  Apple Watch Ultra |  Amazfit T-Rex Ultra 2 |
|---|---|---|
| Price | KSh 90,000.00 | KSh 85,000.00 |
| Display | 49 mm LTPO2 OLED Always-On Retina display; 1,185 mm² display area | 1.5-inch AMOLED |
| Battery capacity | — | 870 mAh rated |
| Water resistance | Water resistant to 100 m under ISO 22810:2010 | 10 ATM; tested to ISO 22810:2010 |
| Processor | Apple S8 SiP | — |
| Storage | 32 GB | 64 GB total; 26.7 GB available |
| Operating system | watchOS | — |
| Network / cellular | LTE and UMTS; cellular service availability varies by carrier and region | — |
| Positioning / GNSS | Dual-frequency L1 and L5 GPS, GLONASS, Galileo, QZSS and BeiDou | Built-in dual-band positioning; six satellite positioning systems; circularly polarised GPS antenna |
| Health & wellness features | ECG app; Blood Oxygen app where available; heart-rate notifications; irregular rhythm notifications; temperature sensing; cycle tracking | 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 | Apple Watch Ultra | Amazfit T-Rex Ultra 2 |
|---|---|---|
| Identity & design | ||
| Brand | Apple | Amazfit |
| Model | Apple Watch Ultra | Amazfit T-Rex Ultra 2 |
| Announced | September 2022 | — |
| Dimensions | 49 × 44 × 12 mm | 51 × 51 × 14.3 mm, excluding heart-rate sensor base |
| Weight | 61.3 g | 89.2 g with strap |
| Build materials | Aerospace-grade titanium case; flat sapphire front crystal; ceramic and sapphire-crystal back | Fibre-reinforced polymer case; Grade 5 titanium bezel, buttons and back panel |
| Wrist size | — | 145–215 mm |
| Strap / band | — | 26 mm silicone strap with classic pin buckle |
| Controls / buttons | Customisable Action button; Digital Crown with haptic feedback; side button; touchscreen | Four physical buttons; sapphire-glass touchscreen |
| Display | ||
| Display | 49 mm LTPO2 OLED Always-On Retina display; 1,185 mm² display area | 1.5-inch AMOLED |
| Screen resolution | 410 × 502 pixels | 480 × 480 pixels, 322 ppi |
| Display protection | Flat sapphire front crystal with raised titanium case edges | Sapphire glass |
| Display features | Always-On display; up to 2,000 nits | Up to 3,000 nits peak brightness; Always-On Display |
| Performance & software | ||
| Processor | Apple S8 SiP | — |
| CPU | 64-bit dual-core processor | — |
| Storage | 32 GB | 64 GB total; 26.7 GB available |
| Operating system | watchOS | — |
| Connectivity | ||
| Network / cellular | LTE and UMTS; cellular service availability varies by carrier and region | — |
| SIM / eSIM | eSIM; carrier plan required | — |
| Wi-Fi | 802.11b/g/n, 2.4 GHz and 5 GHz | 2.4 GHz Wi-Fi (802.11 b/g/n) |
| Bluetooth | Bluetooth 5.3 | Bluetooth 5.2 and BLE |
| NFC | NFC with Apple Pay support | — |
| Positioning / GNSS | Dual-frequency L1 and L5 GPS, GLONASS, Galileo, QZSS and BeiDou | Built-in dual-band positioning; six satellite positioning systems; circularly polarised GPS antenna |
| Ultra Wideband (UWB) | Apple U1 chip | — |
| Audio & communication | ||
| Speaker | Dual speakers; siren | Supported |
| Microphone | Three-microphone array with beamforming and wind-noise mitigation | Supported |
| Calling | Cellular and Bluetooth calling; carrier support required for cellular service | Bluetooth calling and call/text notifications through a connected smartphone |
| Sensors, health & fitness | ||
| Sensors | Blood oxygen sensor; electrical heart sensor; third-generation optical heart sensor; temperature sensor; depth gauge; water-temperature sensor; compass; always-on altimeter; high-g accelerometer; high-dynamic-range gyroscope; 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 | ECG app; Blood Oxygen app where available; heart-rate notifications; irregular rhythm notifications; temperature sensing; cycle tracking | 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 app with sleep stages | Sleep HRV; sleep quality; stages including REM; daytime naps; sleep schedule; breathing quality; sleep score; RestoreIQ recovery insights |
| Sports / workout modes | Workout app with running, cycling, swimming, multisport and other workout types | 187 sports modes; smart recognition of 25 strength-training movements and 8 sports movements; HYROX race and training modes |
| Training & outdoor features | Precision dual-frequency GPS; compass waypoints and Backtrack; running dynamics | 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 | Emergency SOS; international emergency calling; fall detection; crash detection; siren | Two-colour flashlight with SOS/Boost modes; storm, high-altitude blood-oxygen and route-deviation alerts |
| Diving / depth features | Recreational scuba diving with compatible app to 40 m; depth gauge and water-temperature sensor | 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 | — | 870 mAh rated |
| Battery life | Up to 36 hours; up to 18 hours with LTE use | 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 | USB-C magnetic fast-charging cable | Magnetic charging head; DC 5 V 1.5 A maximum input |
| Water resistance | Water resistant to 100 m under ISO 22810:2010 | 10 ATM; tested to ISO 22810:2010 |
| Durability / certifications | IP6X dust resistant; MIL-STD 810H tested | MIL-STD-810H-2019; low-temperature operation down to −30 °C; SGS water-resistance test; certified diving standards |
| Compatibility | ||
| Phone compatibility | Requires iPhone 8 or later with iOS 16 or later at launch | Android 7.0 or later; iOS 15.0 or later |
| Companion app | Apple Watch app and Apple Health | Zepp App |
| Colors | Natural Titanium | Black Magma |
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