AmazFit T-Rex Ultra vs Samsung Galaxy Watch 9 44mm
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. |
|---|
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 |  Samsung Galaxy Watch 9 44mm |
|---|---|---|
| Price | Original price was: KSh 50,000.00.KSh 47,000.00Current price is: KSh 47,000.00. | KSh 42,000.00 |
| Display | 1.39-inch AMOLED | 1.34-inch Super AMOLED Always On Display |
| Battery capacity | 500 mAh rated | 390 mAh lithium-ion |
| Water resistance | 10 ATM; ISO 22810:2010 | 5 ATM / 50 m under ISO 22810; IPX8 tested to 1.5 m fresh water for up to 30 minutes |
| Processor | — | Snapdragon SW6100 Wear Elite (3 nm) |
| RAM | — | 2 GB |
| Storage | Up to 2.3 GB available for music | 32 GB |
| Operating system | Zepp OS 3.5 | Wear OS 7 with One UI Watch 9 |
| Network / cellular | — | GSM, HSPA and LTE on LTE models |
| Positioning / GNSS | Built-in dual-band L1/L5 positioning; six satellite systems | Dual-band GPS (L1+L5); GLONASS; Galileo; BeiDou; QZSS |
| Health & wellness features | 24-hour heart-rate, blood-oxygen and stress monitoring; one-tap measurement; PAI; breathing exercises; health alerts | Heart rate; ECG; blood pressure; blood oxygen; body composition; skin temperature; antioxidant index; Energy Score |
Full specifications
2 of 4 products
| Specification | AmazFit T-Rex Ultra | Samsung Galaxy Watch 9 44mm |
|---|---|---|
| Identity & design | ||
| Brand | Amazfit | Samsung |
| Model | Amazfit T-Rex Ultra | Samsung Galaxy Watch9 40mm |
| Announced | — | 22 July 2026 |
| Dimensions | 47.3 × 47.3 × 13.45 mm, excluding heart-rate sensor base | 42.7 × 40.4 × 8.6 mm |
| Weight | 89 g without strap | 31.5 g |
| Build materials | 316L stainless-steel bezel, back panel, bridge and buttons; polymer-alloy middle frame | Sapphire crystal front; Armor Aluminum 2 frame |
| Wrist size | 140–205 mm | — |
| Strap / band | 22 mm silicone strap with classic pin buckle | Lightweight breathable Sport Band with Dynamic Lug System |
| Controls / buttons | Four physical buttons; glass touchscreen | Touchscreen and two side buttons |
| Display | ||
| Display | 1.39-inch AMOLED | 1.34-inch Super AMOLED Always On Display |
| Screen resolution | 454 × 454 pixels, 326 ppi | 438 × 438 pixels |
| Display protection | Glass | Sapphire crystal |
| Display features | Up to 1,000 nits; Always-On Display; 120+ watch faces | Full-color Always On Display; up to 3,000 nits peak brightness |
| Performance & software | ||
| Processor | — | Snapdragon SW6100 Wear Elite (3 nm) |
| CPU | — | Penta-core, 1 × 2.1 GHz + 4 × 1.95 GHz |
| RAM | — | 2 GB |
| Storage | Up to 2.3 GB available for music | 32 GB |
| Operating system | Zepp OS 3.5 | Wear OS 7 with One UI Watch 9 |
| Connectivity | ||
| Network / cellular | — | GSM, HSPA and LTE on LTE models |
| SIM / eSIM | — | eSIM on LTE models |
| Wi-Fi | 2.4 GHz Wi-Fi | Wi‑Fi 802.11 a/b/g/n/ac, dual-band |
| Bluetooth | Bluetooth 5.0 BLE | Bluetooth 6.0 |
| NFC | — | Supported |
| Positioning / GNSS | Built-in dual-band L1/L5 positioning; six satellite systems | Dual-band GPS (L1+L5); GLONASS; Galileo; BeiDou; QZSS |
| Audio & communication | ||
| Speaker | No built-in speaker; audio through connected Bluetooth headphones | Supported |
| Microphone | — | Supported |
| Calling | — | Bluetooth calling; standalone cellular calling on LTE models |
| Sensors, health & fitness | ||
| Sensors | BioTracker PPG biometric sensor with SpO₂; accelerometer; gyroscope; geomagnetic sensor; barometric altimeter; ambient-light sensor | Accelerometer; barometer; bioelectrical impedance analysis sensor; electrical heart sensor; gyroscope; geomagnetic sensor; ambient-light sensor; optical heart-rate sensor; skin-temperature sensor |
| Health & wellness features | 24-hour heart-rate, blood-oxygen and stress monitoring; one-tap measurement; PAI; breathing exercises; health alerts | Heart rate; ECG; blood pressure; blood oxygen; body composition; skin temperature; antioxidant index; Energy Score |
| Sleep tracking | Sleep stages including REM; naps; sleep schedule; breathing quality; sleep score | Sleep duration, patterns and quality; sleep coaching; sleep-apnea risk detection |
| Sports / workout modes | 162 sports modes; smart recognition of 25 strength movements and 8 sports movements; freediving workouts | Automatic and manual workout tracking across running, walking, cycling, swimming and other activities |
| 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 | Personalized exercise guidance; running coaching; dual-band GNSS route tracking |
| Safety & emergency features | Storm warnings; altitude blood-oxygen reminders; abnormal heart-rate, low-SpO₂ and high-stress alerts | Fall detection and Emergency SOS |
| 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 | 390 mAh lithium-ion |
| 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 40 hours with Always On Display off; up to 30 hours with Always On Display on |
| Charging | Magnetic charging base; approximately 2 hours | Fast WPC-based wireless charging, 10 W |
| Water resistance | 10 ATM; ISO 22810:2010 | 5 ATM / 50 m under ISO 22810; IPX8 tested to 1.5 m fresh water for up to 30 minutes |
| 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; MIL‑STD‑810H certified; ECG certified |
| Compatibility | ||
| Phone compatibility | Android 7.0 or later; iOS 12.0 or later | — |
| Companion app | Zepp App | Samsung Health |
| Colors | Abyss Black; Sahara | Cream; Graphite |
Related comparisons
Apple Watch Series 8AmazFit T-Rex UltraApple Watch Series 9AmazFit T-Rex UltraAmazFit FalconAmazFit T-Rex UltraAmazFit T-Rex UltraSamsung Galaxy Watch UltraAmazFit T-Rex Ultra
Apple Watch Series 10AmazFit T-Rex Ultra
Amazfit T-Rex 3 ProAmazFit T-Rex Ultra
Samsung Galaxy Watch Ultra 2025AmazFit T-Rex Ultra
Google Pixel Watch 4AmazFit T-Rex Ultra
WHOOP Peak 5.0 SensorAmazFit T-Rex Ultra
WHOOP Life