AmazFit T-Rex Ultra vs Apple Watch Series 12 42mm
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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Add up to 2 more items to compare
Apple Watch Series 8 Price range: KSh 50,000.00 through KSh 53,000.00
Apple Watch Series 9 Price range: KSh 45,000.00 through KSh 49,500.00
AmazFit Falcon Original price was: KSh 70,000.00.KSh 63,000.00Current price is: KSh 63,000.00.
Samsung Galaxy Watch UltraKSh 45,000.00
At a glance
Key specifications and important differences. Full details follow below.
| Feature | AmazFit T-Rex Ultra |  Apple Watch Series 12 42mm |
|---|---|---|
| Price | Original price was: KSh 50,000.00.KSh 47,000.00Current price is: KSh 47,000.00. | KSh 50,000.00 |
| Display | 1.39-inch AMOLED | Always-On Retina LTPO3 wide-angle OLED |
| Battery capacity | 500 mAh rated | — |
| Water resistance | 10 ATM; ISO 22810:2010 | 50 m swimproof under ISO 22810:2010 |
| Processor | — | Apple S11 chip; 4-core Neural Engine |
| Storage | Up to 2.3 GB available for music | 64 GB |
| Operating system | Zepp OS 3.5 | watchOS 27 |
| Network / cellular | — | 5G RedCap and LTE on GPS + Cellular models; international roaming supported |
| Positioning / GNSS | Built-in dual-band L1/L5 positioning; six satellite systems | Precision L1 GPS; GLONASS; Galileo; QZSS; BeiDou |
| Health & wellness features | 24-hour heart-rate, blood-oxygen and stress monitoring; one-tap measurement; PAI; breathing exercises; health alerts | 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 |
Full specifications
2 of 4 products
| Specification | AmazFit T-Rex Ultra | Apple Watch Series 12 42mm |
|---|---|---|
| Identity & design | ||
| Brand | Amazfit | Apple |
| Model | Amazfit T-Rex Ultra | Apple Watch Series 12 42mm |
| Announced | — | 9 September 2026 |
| Dimensions | 47.3 × 47.3 × 13.45 mm, excluding heart-rate sensor base | Aluminum or titanium: 42 × 37 × 9.7 mm; ceramic: 43 × 37 × 9.85 mm |
| Weight | 89 g without strap | Aluminum GPS: 32.2 g; aluminum GPS + Cellular: 31.5 g; titanium: 36.5 g; Pearl White ceramic: 41.7 g; Night Blue ceramic: 42.8 g |
| Build materials | 316L stainless-steel bezel, back panel, bridge and buttons; polymer-alloy middle frame | Aluminum, titanium or ceramic case, depending on configuration |
| Wrist size | 140–205 mm | 130–200 mm |
| Strap / band | 22 mm silicone strap with classic pin buckle | — |
| Controls / buttons | Four physical buttons; glass touchscreen | Digital Crown with haptic feedback; side button; band-release button; single tap, double tap and wrist flick gestures |
| Display | ||
| Display | 1.39-inch AMOLED | Always-On Retina LTPO3 wide-angle OLED |
| Screen resolution | 454 × 454 pixels, 326 ppi | 374 × 446 pixels, 326 ppi; 970 mm² display area |
| Display protection | Glass | Ceramic Shield 2 on aluminum cases; sapphire front crystal on titanium and ceramic cases |
| Display features | Up to 1,000 nits; Always-On Display; 120+ watch faces | 1 Hz refresh; up to 2,000 nits peak brightness; 1 nit minimum brightness |
| Performance & software | ||
| Processor | — | Apple S11 chip; 4-core Neural Engine |
| CPU | — | 64-bit dual-core |
| GPU | — | PowerVR |
| Storage | Up to 2.3 GB available for music | 64 GB |
| Operating system | Zepp OS 3.5 | watchOS 27 |
| Connectivity | ||
| Network / cellular | — | 5G RedCap and LTE on GPS + Cellular models; international roaming supported |
| SIM / eSIM | — | eSIM on GPS + Cellular models |
| Wi-Fi | 2.4 GHz Wi-Fi | Wi‑Fi 4 (802.11n), 2.4 GHz and 5 GHz |
| Bluetooth | Bluetooth 5.0 BLE | Bluetooth 5.3 |
| NFC | — | Supported; Apple Pay |
| Positioning / GNSS | Built-in dual-band L1/L5 positioning; six satellite systems | Precision L1 GPS; GLONASS; Galileo; QZSS; BeiDou |
| Ultra Wideband (UWB) | — | Second-generation Ultra Wideband chip |
| Audio & communication | ||
| Speaker | No built-in speaker; audio through connected Bluetooth headphones | Speaker with media playback |
| Microphone | — | Microphone with Voice Isolation |
| Calling | — | Bluetooth calling; cellular calling on GPS + Cellular models; international emergency calling |
| Sensors, health & fitness | ||
| Sensors | BioTracker PPG biometric sensor with SpO₂; accelerometer; gyroscope; geomagnetic sensor; barometric altimeter; ambient-light sensor | High-g accelerometer; high dynamic-range gyroscope; compass; 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 | 24-hour heart-rate, blood-oxygen and stress monitoring; one-tap measurement; PAI; breathing exercises; health alerts | 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 including REM; naps; sleep schedule; breathing quality; sleep score | Sleep duration and stages; sleep score; sleep-apnea notifications |
| Sports / workout modes | 162 sports modes; smart recognition of 25 strength movements and 8 sports movements; freediving workouts | 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 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 | Custom workouts and views; Training Load; heart-rate zones; VO₂ max; Race Route; Pacer; running dynamics; automatic track detection; offline maps, routes, waypoints and Backtrack |
| Safety & emergency features | Storm warnings; altitude blood-oxygen reminders; abnormal heart-rate, low-SpO₂ and high-stress alerts | Emergency SOS; international emergency calling; Fall Detection; Crash Detection; flashlight; Check In; noise monitoring; emergency waypoints |
| Diving / depth features | Outdoor and indoor freediving and spearfishing; depth and water-temperature data; rated to 30 m; EN13319 and ISO 6425 diving certifications | Depth gauge to 6 m; water-temperature sensor |
| Battery & durability | ||
| Battery capacity | 500 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 | Up to 24 hours normal use; up to 38 hours Low Power Mode; up to 10 hours outdoor workout |
| Charging | Magnetic charging base; approximately 2 hours | Fast-charge capable; up to 80% in about 30 minutes; 15 minutes for up to 12 hours normal use; 5 minutes for up to 10 hours sleep tracking |
| Water resistance | 10 ATM; ISO 22810:2010 | 50 m swimproof under 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 | IP6X dust resistance |
| Compatibility | ||
| Phone compatibility | Android 7.0 or later; iOS 12.0 or later | iPhone 11 or later, including iPhone SE (2nd generation or later), with iOS 27 or later |
| Companion app | Zepp App | — |
| Colors | Abyss Black; Sahara | Aluminum: Dark Bronze, Light Gold, Black, Space Gray; titanium: Radiant Gold, Natural; ceramic: Pearl White, Night Blue |
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