Amazfit T-Rex 3 vs OnePlus Watch 4
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OnePlus Watch 2KSh 29,500.00
Huawei Watch GT 6 Pro Original price was: KSh 36,000.00.KSh 33,500.00Current price is: KSh 33,500.00.
WHOOP ONE 5.0 SensorKSh 37,000.00
Samsung Galaxy Watch 8 Classic Original price was: KSh 48,500.00.KSh 35,500.00Current price is: KSh 35,500.00.
At a glance
Key specifications and important differences. Full details follow below.
| Feature |  Amazfit T-Rex 3 |  OnePlus Watch 4 |
|---|---|---|
| Price | KSh 33,000.00 | KSh 38,000.00 |
| Display | 1.5-inch AMOLED touchscreen | 1.5-inch LTPO AMOLED |
| Battery capacity | 700 mAh rated | 646 mAh lithium-ion |
| Water resistance | 10 ATM; suitable for swimming and supported high-speed water sports subject to manufacturer guidance | 5 ATM |
| Processor | — | Qualcomm Snapdragon W5 Gen 1 + BES2800 |
| RAM | — | 2 GB |
| Storage | — | 32 GB |
| Operating system | — | Wear OS 6.0 with OxygenOS Watch 8 |
| Network / cellular | — | No cellular connectivity |
| Positioning / GNSS | Dual-band, six-satellite positioning | Dual-band GPS (L1+L5); GLONASS; Galileo; BeiDou; QZSS |
| Health & wellness features | Heart rate, blood oxygen, stress, PAI and temperature insights; wellness measurements are not intended for medical diagnosis | 60-second Wellness Overview; heart-rate monitoring and alerts; blood-oxygen monitoring; wrist-temperature tracking; ECG |
Full specifications
2 of 4 products
| Specification | Amazfit T-Rex 3 | OnePlus Watch 4 |
|---|---|---|
| Identity & design | ||
| Brand | Amazfit | OnePlus |
| Model | T-Rex 3 | OnePlus Watch 4 |
| Announced | — | 22 April 2026 |
| Dimensions | 48.5 × 48.5 × 13.75 mm (heart-rate sensor base excluded) | 47.4 × 47.4 × 11 mm |
| Weight | 68.3 g without strap | 43 g without strap; 68 g with strap |
| Build materials | Stainless-steel bezel, polymer middle frame and Gorilla Glass touchscreen | Sapphire crystal front; titanium alloy case; glass-fibre-reinforced plastic back |
| Wrist size | 145–210 mm | 140–210 mm |
| Strap / band | 22 mm liquid-silicone strap with classic pin buckle | Fluororubber strap |
| Controls / buttons | Four physical buttons and touchscreen | — |
| Display | ||
| Display | 1.5-inch AMOLED touchscreen | 1.5-inch LTPO AMOLED |
| Screen resolution | 480 × 480 pixels, 322 ppi | 466 × 466 pixels, 310 ppi |
| Display protection | Gorilla Glass | Sapphire crystal glass |
| Display features | Up to 2,000 nits peak brightness; always-on display and more than 400 watch faces | 600 nits typical; 1,600 nits High Brightness Mode; up to 3,000 nits peak brightness |
| Performance & software | ||
| Processor | — | Qualcomm Snapdragon W5 Gen 1 + BES2800 |
| RAM | — | 2 GB |
| Storage | — | 32 GB |
| Operating system | — | Wear OS 6.0 with OxygenOS Watch 8 |
| Connectivity | ||
| Network / cellular | — | No cellular connectivity |
| SIM / eSIM | — | No eSIM |
| Wi-Fi | 2.4 GHz Wi-Fi | 2.4 GHz and 5 GHz Wi‑Fi |
| Bluetooth | Bluetooth 5.2 BLE | Bluetooth 5.2 |
| NFC | — | Supported; Google Wallet |
| Positioning / GNSS | Dual-band, six-satellite positioning | Dual-band GPS (L1+L5); GLONASS; Galileo; BeiDou; QZSS |
| Audio & communication | ||
| Speaker | — | Supported |
| Microphone | Built-in microphone | — |
| Calling | Zepp Flow voice control and speech-to-text replies when paired with a supported phone | — |
| Sensors, health & fitness | ||
| Sensors | BioTracker 6.0 PPG biometric sensor with blood-oxygen support, accelerometer, gyroscope, geomagnetic sensor, barometric altimeter, ambient-light sensor and temperature sensor | Accelerometer; gyroscope; optical heart-rate sensor; optical SpO2 sensor; wrist-temperature sensor; geomagnetic sensor; ambient-light sensor; barometer |
| Health & wellness features | Heart rate, blood oxygen, stress, PAI and temperature insights; wellness measurements are not intended for medical diagnosis | 60-second Wellness Overview; heart-rate monitoring and alerts; blood-oxygen monitoring; wrist-temperature tracking; ECG |
| Sleep tracking | Sleep stages, naps, sleep score, breathing quality and recovery insights | Sleep monitoring and Sleep Wellbeing insights |
| Sports / workout modes | More than 170 sports modes | 100+ sports modes; automatic workout recognition |
| Training & outdoor features | Offline maps and navigation, GPS privacy controls, Zepp Coach and advanced running/outdoor metrics | Professional running, tennis and skiing modes; Pace Assistant; posture, pace and recovery metrics |
| Diving / depth features | Freediving support to 45 m under applicable certification | — |
| Battery & durability | ||
| Battery capacity | 700 mAh rated | 646 mAh lithium-ion |
| Battery life | Up to 27 days typical use, 40 days battery saver, 13 days heavy use, 42 hours accurate GPS or 180 hours maximum GPS | Smart Mode: up to 5 days Heavy use: up to 3 days Power Saver Mode: up to 16 days |
| Charging | Magnetic charging base; approximately 3 hours; USB-C cable is not included | 7.5 W wired charging; full charge in approximately 75 minutes |
| Water resistance | 10 ATM; suitable for swimming and supported high-speed water sports subject to manufacturer guidance | 5 ATM |
| Durability / certifications | EN 13319, ISO 6425 and GB/T 18828 certification for freediving to 45 m; operating range includes -30°C to 70°C | IP68; IP69; MIL‑STD‑810H compliant; ECG certified |
| Compatibility | ||
| Phone compatibility | Android 7.0 or later; iOS 14.0 or later | Android 9.0 or later with Google Mobile Services 23.45.23 or later; not compatible with iOS or Android Go |
| Companion app | Zepp app | OHealth |
| Colors | Onyx, Lava or Haze Gray | Midnight Titanium; Evergreen Titanium |
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