Apple Watch Ultra vs Amazfit T-Rex 3 Pro
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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
Samsung Galaxy Watch Ultra 2025KSh 43,500.00
Samsung Galaxy Watch Ultra 2 47mmKSh 72,000.00
At a glance
Key specifications and important differences. Full details follow below.
| Feature |  Apple Watch Ultra |  Amazfit T-Rex 3 Pro |
|---|---|---|
| Price | KSh 90,000.00 | Price range: KSh 55,000.00 through KSh 65,000.00 |
| Display | 49 mm LTPO2 OLED Always-On Retina display; 1,185 mm² display area | AMOLED 48 mm: 1.5-inch 44 mm: 1.32-inch |
| Battery capacity | — | 48 mm: 700 mAh rated 44 mm: 500 mAh rated |
| Water resistance | Water resistant to 100 m under ISO 22810:2010 | 10 ATM |
| Processor | Apple S8 SiP | — |
| Storage | 32 GB | — |
| Operating system | watchOS | Zepp OS 5 |
| 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 six-satellite positioning with circularly polarized GPS antenna |
| Health & wellness features | ECG app; Blood Oxygen app where available; heart-rate notifications; irregular rhythm notifications; temperature sensing; cycle tracking | Heart rate, blood oxygen, stress, HRV, readiness and temperature insights; wellness measurements are not intended for medical diagnosis |
Full specifications
2 of 4 products
| Specification | Apple Watch Ultra | Amazfit T-Rex 3 Pro |
|---|---|---|
| Identity & design | ||
| Brand | Apple | Amazfit |
| Model | Apple Watch Ultra | T-Rex 3 Pro |
| Announced | September 2022 | — |
| Dimensions | 49 × 44 × 12 mm | 48 mm: 48 × 48 × 14 mm 44 mm: 44.8 × 44.8 × 13.2 mm Heart-rate sensor base excluded |
| Weight | 61.3 g | 48 mm: 52 g 44 mm: 46.8 g Without strap |
| Build materials | Aerospace-grade titanium case; flat sapphire front crystal; ceramic and sapphire-crystal back | Fiber-reinforced polymer case with Grade 5 titanium bezel and buttons; sapphire-glass touchscreen |
| Wrist size | — | 48 mm: 145–210 mm 44 mm: 140–205 mm |
| Strap / band | — | Silicone quick-release strap 48 mm: 22 mm 44 mm: 20 mm |
| Controls / buttons | Customisable Action button; Digital Crown with haptic feedback; side button; touchscreen | Four physical buttons and touchscreen |
| Display | ||
| Display | 49 mm LTPO2 OLED Always-On Retina display; 1,185 mm² display area | AMOLED 48 mm: 1.5-inch 44 mm: 1.32-inch |
| Screen resolution | 410 × 502 pixels | 48 mm: 480 × 480 pixels, 322 ppi 44 mm: 466 × 466 pixels, 353 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 | — |
| Operating system | watchOS | Zepp OS 5 |
| 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 |
| Bluetooth | Bluetooth 5.3 | Bluetooth 5.2 BLE |
| NFC | NFC with Apple Pay support | — |
| Positioning / GNSS | Dual-frequency L1 and L5 GPS, GLONASS, Galileo, QZSS and BeiDou | Built-in six-satellite positioning with circularly polarized GPS antenna |
| Ultra Wideband (UWB) | Apple U1 chip | — |
| Audio & communication | ||
| Speaker | Dual speakers; siren | Built-in speaker |
| Microphone | Three-microphone array with beamforming and wind-noise mitigation | Built-in microphone |
| Calling | Cellular and Bluetooth calling; carrier support required for cellular service | Bluetooth calling when paired with a compatible phone |
| 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 (5PD + 2LED), accelerometer, gyroscope, geomagnetic sensor, barometric altimeter, ambient-light sensor and temperature sensor |
| Health & wellness features | ECG app; Blood Oxygen app where available; heart-rate notifications; irregular rhythm notifications; temperature sensing; cycle tracking | Heart rate, blood oxygen, stress, HRV, readiness and temperature insights; wellness measurements are not intended for medical diagnosis |
| Sleep tracking | Sleep app with sleep stages | Sleep stages, naps, sleep score, breathing quality and recovery insights |
| Sports / workout modes | Workout app with running, cycling, swimming, multisport and other workout types | 187 sports modes with smart recognition for strength-training and sports movements |
| Training & outdoor features | Precision dual-frequency GPS; compass waypoints and Backtrack; running dynamics | Offline base, contour and ski maps; turn-by-turn navigation, POI search, route planning, round-trip routing, auto-rerouting, Zepp Coach and PeakBeats training metrics |
| Safety & emergency features | Emergency SOS; international emergency calling; fall detection; crash detection; siren | SOS tools and downloadable maps; requires appropriate setup and phone connectivity for supported communications |
| Diving / depth features | Recreational scuba diving with compatible app to 40 m; depth gauge and water-temperature sensor | Freediving and scuba modes rated to 45 m; follow the manufacturer’s diving limits and safety guidance |
| Battery & durability | ||
| Battery capacity | — | 48 mm: 700 mAh rated 44 mm: 500 mAh rated |
| Battery life | Up to 36 hours; up to 18 hours with LTE use | 48 mm: up to 25 days typical, 10 days heavy, 38 hours accurate GPS 44 mm: up to 17 days typical, 8 days heavy, 26 hours accurate GPS |
| Charging | USB-C magnetic fast-charging cable | Magnetic charging base |
| Water resistance | Water resistant to 100 m under ISO 22810:2010 | 10 ATM |
| Durability / certifications | IP6X dust resistant; MIL-STD 810H tested | Rugged outdoor construction with Grade 5 titanium controls and sapphire glass |
| 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 Gold (44mm), Black Gold (48mm); Gold/Grey, Tactical Black |
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