Amazfit T-Rex 3 Pro vs Apple Watch Ultra 4 49mm
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Apple Watch UltraKSh 90,000.00
Apple Watch Series 9KSh 45,000 – KSh 49,500
Apple Watch Ultra 2KSh 103,500.00
Samsung Galaxy Watch Ultra 2 47mmKSh 69,500.00
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At a glance
Key specifications and important differences. Full details follow below.
| Feature |  Amazfit T-Rex 3 Pro |  Apple Watch Ultra 4 49mm |
|---|---|---|
| Price | KSh 55,000 – KSh 65,000 | KSh 120,000.00 |
| Display | AMOLED 48 mm: 1.5-inch 44 mm: 1.32-inch | 1.98-inch Always-On Retina LTPO3 wide-angle OLED |
| Battery capacity | 48 mm: 700 mAh rated 44 mm: 500 mAh rated | — |
| Water resistance | 10 ATM | 100 m under ISO 22810:2010; suitable for swimming, snorkeling, scuba and high-speed water sports |
| Processor | — | Apple S11 chip; 4-core Neural Engine |
| Storage | — | 64 GB |
| Operating system | Zepp OS 5 | watchOS 27 |
| Network / cellular | — | 5G RedCap and LTE cellular connectivity; international roaming supported |
| Positioning / GNSS | Built-in six-satellite positioning with circularly polarized GPS antenna | Precision dual-frequency GPS (L1+L5); Galileo; QZSS; BeiDou |
| Health & wellness features | Heart rate, blood oxygen, stress, HRV, readiness and temperature insights; wellness measurements are not intended for medical diagnosis | Heart rate and HRV; Blood Oxygen; ECG; respiratory rate; wrist temperature; Readiness and Vitals; high/low heart-rate and irregular-rhythm notifications; cycle tracking; hypertension notifications |
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Full specifications
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Identity & design
| Specification | Amazfit T-Rex 3 Pro | Apple Watch Ultra 4 49mm |
|---|---|---|
| Brand | Amazfit | Apple |
| Model | T-Rex 3 Pro | Apple Watch Ultra 4 49mm |
| Announced | — | 9 September 2026 |
| Dimensions | 48 mm: 48 × 48 × 14 mm 44 mm: 44.8 × 44.8 × 13.2 mm Heart-rate sensor base excluded | 49 × 44 × 12 mm |
| Weight | 48 mm: 52 g 44 mm: 46.8 g Without strap | Natural titanium: 63.0 g; black titanium: 63.1 g |
| Build materials | Fiber-reinforced polymer case with Grade 5 titanium bezel and buttons; sapphire-glass touchscreen | Grade 5 titanium case; ceramic and zirconia back; flat sapphire crystal front |
| Wrist size | 48 mm: 145–210 mm 44 mm: 140–205 mm | 130–210 mm |
| Strap / band | Silicone quick-release strap 48 mm: 22 mm 44 mm: 20 mm | — |
| Controls / buttons | Four physical buttons and touchscreen | Customizable Action button; Digital Crown with haptic feedback; side button; single tap, double tap and wrist flick gestures |
Display
| Specification | Amazfit T-Rex 3 Pro | Apple Watch Ultra 4 49mm |
|---|---|---|
| Display | AMOLED 48 mm: 1.5-inch 44 mm: 1.32-inch | 1.98-inch Always-On Retina LTPO3 wide-angle OLED |
| Screen resolution | 48 mm: 480 × 480 pixels, 322 ppi 44 mm: 466 × 466 pixels, 353 ppi | 422 × 514 pixels, 326 ppi; 1,245 mm² display area |
| Display protection | Sapphire glass | Flat sapphire crystal |
| Display features | Up to 3,000 nits peak brightness; always-on display | 1 Hz refresh; up to 3,000 nits peak brightness; 1 nit minimum brightness; Night Mode |
Performance & software
| Specification | Amazfit T-Rex 3 Pro | Apple Watch Ultra 4 49mm |
|---|---|---|
| Processor | — | Apple S11 chip; 4-core Neural Engine |
| CPU | — | 64-bit dual-core |
| GPU | — | PowerVR |
| Storage | — | 64 GB |
| Operating system | Zepp OS 5 | watchOS 27 |
Connectivity
| Specification | Amazfit T-Rex 3 Pro | Apple Watch Ultra 4 49mm |
|---|---|---|
| Network / cellular | — | 5G RedCap and LTE cellular connectivity; international roaming supported |
| SIM / eSIM | — | eSIM |
| Wi-Fi | 2.4 GHz Wi-Fi | Wi‑Fi 4 (802.11n), 2.4 GHz and 5 GHz |
| Bluetooth | Bluetooth 5.2 BLE | Bluetooth 5.3 |
| NFC | — | Supported; Apple Pay |
| Positioning / GNSS | Built-in six-satellite positioning with circularly polarized GPS antenna | Precision dual-frequency GPS (L1+L5); Galileo; QZSS; BeiDou |
| Ultra Wideband (UWB) | — | Second-generation Ultra Wideband chip |
| Satellite features | — | Satellite communications for Emergency SOS, Messages and Find My |
Audio & communication
| Specification | Amazfit T-Rex 3 Pro | Apple Watch Ultra 4 49mm |
|---|---|---|
| Speaker | Built-in speaker | Dual speakers with 86 dB siren; media playback |
| Microphone | Built-in microphone | Three-microphone array with beamforming and wind-noise mitigation |
| Calling | Bluetooth calling when paired with a compatible phone | Cellular and Bluetooth calling; international emergency calling |
Sensors, health & fitness
| Specification | Amazfit T-Rex 3 Pro | Apple Watch Ultra 4 49mm |
|---|---|---|
| Sensors | BioTracker 6.0 PPG biometric sensor (5PD + 2LED), accelerometer, gyroscope, geomagnetic sensor, barometric altimeter, ambient-light sensor and temperature sensor | High-g accelerometer; high dynamic-range gyroscope; compass; barometer/always-on altimeter; ambient-light sensor; third-generation electrical heart sensor; always-on optical heart sensor; blood-oxygen sensor; temperature sensor; depth gauge; water-temperature sensor |
| Health & wellness features | Heart rate, blood oxygen, stress, HRV, readiness and temperature insights; wellness measurements are not intended for medical diagnosis | Heart rate and HRV; Blood Oxygen; ECG; respiratory rate; wrist temperature; Readiness and Vitals; high/low heart-rate and irregular-rhythm notifications; cycle tracking; hypertension notifications |
| Sleep tracking | Sleep stages, naps, sleep score, breathing quality and recovery insights | Sleep duration and stages; sleep score; sleep-apnea notifications |
| Sports / workout modes | 187 sports modes with smart recognition for strength-training and sports movements | Running; hiking; cycling; pool and open-water swimming; skiing; snowboarding; rowing; paddling; golf; walking; HIIT; yoga; strength; dance; Pilates; Tai Chi; kickboxing; multisport and more |
| 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 | Custom workouts and views; Training Load and Workout Effort; heart-rate zones; VO₂ max; Race Route; Pacer; running dynamics; automatic track detection; offline maps, routes, waypoints, Backtrack and elevation alerts |
| Safety & emergency features | SOS tools and downloadable maps; requires appropriate setup and phone connectivity for supported communications | Emergency SOS; satellite SOS and messaging; international emergency calling; siren; flashlight; Fall Detection; Crash Detection; Check In; noise monitoring; emergency waypoints |
| Diving / depth features | Freediving and scuba modes rated to 45 m; follow the manufacturer’s diving limits and safety guidance | Recreational scuba diving to 40 m; automatic dive launch at 1 m; current/maximum depth and duration; GPS entry/exit points; depth gauge and water temperature |
Battery & durability
| Specification | Amazfit T-Rex 3 Pro | Apple Watch Ultra 4 49mm |
|---|---|---|
| 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 | Up to 50 hours normal use; up to 84 hours Low Power Mode; up to 18 hours outdoor workout; up to 25 hours Extended Workout; up to 45 hours Max Extended Workout |
| Charging | Magnetic charging base | Fast-charge capable; up to 80% in about 45 minutes; 15 minutes for up to 18 hours normal use; 5 minutes for up to 10 hours sleep tracking |
| Water resistance | 10 ATM | 100 m under ISO 22810:2010; suitable for swimming, snorkeling, scuba and high-speed water sports |
| Durability / certifications | Rugged outdoor construction with Grade 5 titanium controls and sapphire glass | IP6X dust resistance under IEC 60529; EN 13319 recreational diving to 40 m; tested to MIL‑STD‑810H |
Compatibility
| Specification | Amazfit T-Rex 3 Pro | Apple Watch Ultra 4 49mm |
|---|---|---|
| Phone compatibility | Android 7.0 or later; iOS 15.0 or later | iPhone 11 or later, including iPhone SE (2nd generation or later), with iOS 27 or later |
| Companion app | Zepp app | — |
| Colors | Black Gold (44mm), Black Gold (48mm); Gold/Grey, Tactical Black | Natural titanium; black titanium |
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