Apple Watch Ultra 3 vs Amazfit T-Rex 3 Pro
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Apple Watch Ultra 2KSh 103,500.00
Apple Watch Series 8 Price range: KSh 50,000.00 through KSh 53,000.00
Apple Watch SE 2 Price range: KSh 28,500.00 through KSh 32,000.00
Apple Watch UltraKSh 90,000.00
At a glance
Key specifications and important differences. Full details follow below.
| Feature |  Apple Watch Ultra 3 |  Amazfit T-Rex 3 Pro |
|---|---|---|
| Price | Price range: KSh 96,000.00 through KSh 115,000.00 | Price range: KSh 55,000.00 through KSh 65,000.00 |
| Display | Always-On Retina display with wide-angle LTPO3 OLED | 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 | 100 m under ISO 22810:2010 | 10 ATM |
| Processor | Apple S10 chip | — |
| Storage | 64 GB | — |
| Operating system | watchOS | Zepp OS 5 |
| Network / cellular | 5G RedCap and LTE on supported model A3281; availability varies by country and carrier | — |
| Positioning / GNSS | Built-in L1 + L5 precision dual-frequency GPS; GPS, GLONASS, Galileo, QZSS and BeiDou | Built-in six-satellite positioning with circularly polarized GPS antenna |
| Health & wellness features | Blood Oxygen, ECG, Cycle Tracking, heart-rate notifications, irregular-rhythm notifications, medications, mindfulness and noise features; availability varies by region | 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 3 | Amazfit T-Rex 3 Pro |
|---|---|---|
| Identity & design | ||
| Brand | Apple | Amazfit |
| Model | Apple Watch Ultra 3 | T-Rex 3 Pro |
| Announced | 2025 | — |
| 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 | Natural titanium: 61.6 g Black titanium: 61.8 g | 48 mm: 52 g 44 mm: 46.8 g Without strap |
| Build materials | Grade 5 titanium case; flat sapphire crystal display | Fiber-reinforced polymer case with Grade 5 titanium bezel and buttons; sapphire-glass touchscreen |
| Wrist size | Fits 130–210 mm wrists | 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 | Digital Crown with haptic feedback, side button, customizable Action button, double-tap and wrist-flick gestures, touchscreen | Four physical buttons and touchscreen |
| Display | ||
| Display | Always-On Retina display with wide-angle LTPO3 OLED | AMOLED 48 mm: 1.5-inch 44 mm: 1.32-inch |
| Screen resolution | 422 × 514 pixels (326 ppi); 1,245 mm² display area | 48 mm: 480 × 480 pixels, 322 ppi 44 mm: 466 × 466 pixels, 353 ppi |
| Display protection | Flat sapphire crystal | Sapphire glass |
| Display features | 1 Hz refresh; up to 3,000 nits peak brightness; 1 nit minimum brightness; Night Mode | Up to 3,000 nits peak brightness; always-on display |
| Performance & software | ||
| Processor | Apple S10 chip | — |
| CPU | 64-bit dual-core processor; 4-core Neural Engine | — |
| Storage | 64 GB | — |
| Operating system | watchOS | Zepp OS 5 |
| Connectivity | ||
| Network / cellular | 5G RedCap and LTE on supported model A3281; availability varies by country and carrier | — |
| SIM / eSIM | Cellular model uses eSIM | — |
| Wi-Fi | Wi-Fi 4 (802.11n), 2.4 GHz and 5 GHz | 2.4 GHz Wi-Fi |
| Bluetooth | Bluetooth 5.3 | Bluetooth 5.2 BLE |
| NFC | Apple Pay and GymKit support | — |
| Positioning / GNSS | Built-in L1 + L5 precision dual-frequency GPS; GPS, GLONASS, Galileo, QZSS and BeiDou | Built-in six-satellite positioning with circularly polarized GPS antenna |
| Ultra Wideband (UWB) | Second-generation Ultra Wideband chip; availability varies by region | — |
| Satellite features | Satellite connectivity for Emergency SOS and Find My; availability varies by region | — |
| Audio & communication | ||
| Speaker | Built-in speaker and siren | Built-in speaker |
| Microphone | Three-microphone array with beamforming and wind-noise mitigation | Built-in microphone |
| Calling | Bluetooth, Wi-Fi and cellular calling where supported | Bluetooth calling when paired with a compatible phone |
| Sensors, health & fitness | ||
| Sensors | Electrical heart sensor, third-generation optical heart sensor, blood oxygen sensor, temperature sensor, depth gauge, water-temperature sensor, compass, always-on altimeter, high-g accelerometer, high-dynamic-range gyroscope and 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 | Blood Oxygen, ECG, Cycle Tracking, heart-rate notifications, irregular-rhythm notifications, medications, mindfulness and noise features; availability varies by region | Heart rate, blood oxygen, stress, HRV, readiness and temperature insights; wellness measurements are not intended for medical diagnosis |
| Sleep tracking | Sleep stages, Sleep Score and sleep-apnoea notifications where available | Sleep stages, naps, sleep score, breathing quality and recovery insights |
| Sports / workout modes | — | 187 sports modes with smart recognition for strength-training and sports movements |
| Training & outdoor features | — | 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 | Satellite Emergency SOS and Find My, Emergency SOS, international emergency calling, siren, Crash Detection, Fall Detection, noise monitoring and Backtrack; availability varies by region | SOS tools and downloadable maps; requires appropriate setup and phone connectivity for supported communications |
| Diving / depth features | Depth gauge and water-temperature sensor; EN13319 recreational scuba diving to 40 m | 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 | — | 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 | — | Magnetic charging base |
| Water resistance | 100 m under ISO 22810:2010 | 10 ATM |
| Durability / certifications | IP6X dust resistance; EN13319; tested to MIL-STD-810H | Rugged outdoor construction with Grade 5 titanium controls and sapphire glass |
| Compatibility | ||
| Phone compatibility | Requires a compatible iPhone; feature and regional requirements vary | Android 7.0 or later; iOS 15.0 or later |
| Companion app | Apple Watch app and Apple Health | Zepp app |
| Colors | Natural titanium and Black titanium | Black Gold (44mm), Black Gold (48mm); Gold/Grey, Tactical Black |
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