Amazfit T-Rex Ultra 2: A2550 · 51 mm · Black Magma · silicone strap
Samsung Galaxy Watch5 (40 mm, Bluetooth): The 40 mm aluminium Bluetooth version of the Galaxy Watch5, in Graphite, Pink Gold and Silver. The 44 mm version has a larger screen and battery; the titanium Galaxy Watch5 Pro is a separate model.
| Specification | Amazfit T-Rex Ultra 2 | Samsung Galaxy Watch5 (40 mm, Bluetooth) |
|---|---|---|
| Release year | 2026 | 2022 |
| Announcement / availability | 19 February 2026 Amazfit | — |
| Display | 1.5-inch AMOLED · 480 × 480 · sapphire glass Amazfit | 1.2-inch (30.4 mm) Super AMOLED, 396 × 396 pixels; full-colour Always On Display; sapphire crystal Samsung |
| Peak brightness | Up to 3000 nits Amazfit | — |
| Body | Polymer case; Grade 5 titanium bezel, buttons and back Amazfit | — |
| Size / weight | 51 × 51 × 14.3 mm; 89.2 g with strap Amazfit | — |
| Strap | 26 mm silicone; 145–215 mm wrist Amazfit | — |
| Storage | 64 GB total; up to 26.7 GB user space Amazfit | — |
| Positioning | Dual-band GNSS; six satellite systems Amazfit | — |
| Sensors | BioTracker 6.0 PPG; barometer, compass, motion and temperature sensors Amazfit | Samsung BioActive Sensor (optical heart rate, electrical heart signal, bioelectrical impedance analysis); temperature sensor; accelerometer, barometer, gyro, geomagnetic and light sensors Samsung |
| Battery | 870 mAh; up to 30 typical / 15 heavy / 10 AOD days Amazfit | — |
| GPS battery modes | Up to 50 Accurate / 90 saving / 177 max-battery hours Amazfit | — |
| Wireless | Bluetooth 5.2 BLE; 2.4 GHz Wi-Fi Amazfit | — |
| Water / diving | 10 ATM; recreational diving up to 45 m Amazfit | — |
| Phone connection | Android 7+ / iOS 15+; Zepp app Amazfit | — |
| Charging | Magnetic charging puck; USB-C cable separate Amazfit | — |
| Calls | Bluetooth calls using microphone/speaker Amazfit | — |
| Case and colours | — | Armor Aluminum case with Sport Band; Graphite, Pink Gold, Silver Samsung |
| Size and weight | — | 39.3 × 40.4 × 9.8 mm; 28.7 g (without strap) Samsung |
| Processor | — | Exynos W920, dual-core 1.18 GHz Samsung |
| Memory and storage | — | 1.5 GB RAM; 16 GB internal storage Samsung |
| Battery and charging | — | 284 mAh (typical); faster WPC-based wireless charging Samsung |
| Software | — | At launch Wear OS Powered by Samsung (Wear OS 3.5) with One UI Watch 4.5 Samsung |
| Connectivity | — | Bluetooth 5.2; Wi‑Fi 802.11 a/b/g/n 2.4 + 5 GHz; NFC; GPS/GLONASS/BeiDou/Galileo Samsung |
| Durability | — | 5ATM + IP68; MIL-STD-810H Samsung |