AmazFit T-Rex Ultra vs Samsung Galaxy Watch Ultra
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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AmazFit Falcon Original price was: KSh 70,000.00.KSh 63,000.00Current price is: KSh 63,000.00.
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At a glance
Key specifications and important differences. Full details follow below.
| Feature | AmazFit T-Rex Ultra |  Samsung Galaxy Watch Ultra |
|---|---|---|
| Price | Original price was: KSh 50,000.00.KSh 47,000.00Current price is: KSh 47,000.00. | KSh 45,000.00 |
| Display | 1.39-inch AMOLED | 1.5-inch Super AMOLED |
| Battery capacity | 500 mAh rated | 590 mAh |
| Water resistance | 10 ATM; ISO 22810:2010 | 10 ATM |
| Processor | — | Exynos W1000 (3 nm) |
| RAM | — | 2 GB |
| Storage | Up to 2.3 GB available for music | 32 GB |
| Operating system | Zepp OS 3.5 | Wear OS Powered by Samsung; One UI Watch |
| Network / cellular | — | LTE and UMTS; availability varies by carrier and region |
| Positioning / GNSS | Built-in dual-band L1/L5 positioning; six satellite systems | Built-in dual-frequency L1 + L5 GPS; GPS, GLONASS, BeiDou and Galileo |
| Health & wellness features | 24-hour heart-rate, blood-oxygen and stress monitoring; one-tap measurement; PAI; breathing exercises; health alerts | Heart-rate monitoring, ECG, blood pressure, body composition, blood oxygen, skin temperature and Energy Score; availability varies by market and paired phone |
Full specifications
2 of 4 products
| Specification | AmazFit T-Rex Ultra | Samsung Galaxy Watch Ultra |
|---|---|---|
| Identity & design | ||
| Brand | Amazfit | Samsung |
| Model | Amazfit T-Rex Ultra | Galaxy Watch Ultra |
| Announced | — | July 2024 |
| Dimensions | 47.3 × 47.3 × 13.45 mm, excluding heart-rate sensor base | 47.4 × 47.1 × 12.1 mm |
| Weight | 89 g without strap | 60.5 g |
| Build materials | 316L stainless-steel bezel, back panel, bridge and buttons; polymer-alloy middle frame | Grade 4 titanium case; sapphire-crystal display |
| Wrist size | 140–205 mm | — |
| Strap / band | 22 mm silicone strap with classic pin buckle | — |
| Controls / buttons | Four physical buttons; glass touchscreen | Touchscreen; Quick button; Home and Back buttons |
| Display | ||
| Display | 1.39-inch AMOLED | 1.5-inch Super AMOLED |
| Screen resolution | 454 × 454 pixels, 326 ppi | 480 × 480 pixels |
| Display protection | Glass | Sapphire crystal |
| Display features | Up to 1,000 nits; Always-On Display; 120+ watch faces | Full-colour Always-On Display; up to 3,000 nits |
| Performance & software | ||
| Processor | — | Exynos W1000 (3 nm) |
| CPU | — | 5-core CPU up to 1.6 GHz |
| RAM | — | 2 GB |
| Storage | Up to 2.3 GB available for music | 32 GB |
| Operating system | Zepp OS 3.5 | Wear OS Powered by Samsung; One UI Watch |
| Connectivity | ||
| Network / cellular | — | LTE and UMTS; availability varies by carrier and region |
| SIM / eSIM | — | eSIM |
| Wi-Fi | 2.4 GHz Wi-Fi | 802.11a/b/g/n, 2.4 GHz and 5 GHz |
| Bluetooth | Bluetooth 5.0 BLE | Bluetooth 5.3 |
| NFC | — | Supported |
| Positioning / GNSS | Built-in dual-band L1/L5 positioning; six satellite systems | Built-in dual-frequency L1 + L5 GPS; GPS, GLONASS, BeiDou and Galileo |
| Audio & communication | ||
| Speaker | No built-in speaker; audio through connected Bluetooth headphones | Speaker and siren |
| Microphone | — | Microphone |
| Calling | — | Standalone LTE calling and Bluetooth calling; carrier support required |
| Sensors, health & fitness | ||
| Sensors | BioTracker PPG biometric sensor with SpO₂; accelerometer; gyroscope; geomagnetic sensor; barometric altimeter; ambient-light sensor | Samsung BioActive Sensor (optical heart-rate, electrical heart and bioelectrical impedance analysis), infrared temperature sensor, accelerometer, barometer, gyroscope, geomagnetic sensor and light sensor |
| Health & wellness features | 24-hour heart-rate, blood-oxygen and stress monitoring; one-tap measurement; PAI; breathing exercises; health alerts | Heart-rate monitoring, ECG, blood pressure, body composition, blood oxygen, skin temperature and Energy Score; availability varies by market and paired phone |
| Sleep tracking | Sleep stages including REM; naps; sleep schedule; breathing quality; sleep score | Sleep tracking, sleep coaching and sleep-apnoea features where available |
| Sports / workout modes | 162 sports modes; smart recognition of 25 strength movements and 8 sports movements; freediving workouts | Multiple workout modes including multisport and automatic workout detection |
| 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 | Dual-frequency GPS; GPX routes; Track Back; personalised heart-rate zones; Functional Threshold Power |
| Safety & emergency features | Storm warnings; altitude blood-oxygen reminders; abnormal heart-rate, low-SpO₂ and high-stress alerts | Fall detection, SOS and siren features when configured |
| Diving / depth features | Outdoor and indoor freediving and spearfishing; depth and water-temperature data; rated to 30 m; EN13319 and ISO 6425 diving certifications | — |
| Battery & durability | ||
| Battery capacity | 500 mAh rated | 590 mAh |
| 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 80 hours with Always-On Display off; up to 60 hours with Always-On Display on; up to 100 hours in Power Saving Mode |
| Charging | Magnetic charging base; approximately 2 hours | WPC-based wireless charging |
| Water resistance | 10 ATM; ISO 22810:2010 | 10 ATM |
| Durability / certifications | Mud-resistant design; ultra-low-temperature mode down to −30 °C; SGS-certified 10 ATM testing; EN13319 and ISO 6425 diving certifications | IP68; MIL-STD-810H |
| Compatibility | ||
| Phone compatibility | Android 7.0 or later; iOS 12.0 or later | Android 11 or later with more than 1.5 GB RAM and Google Mobile Services; compatibility varies by market and device |
| Companion app | Zepp App | Galaxy Wearable and Samsung Health |
| Colors | Abyss Black; Sahara | Titanium Gray; Titanium White; Titanium Silver |
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