Amazfit T-Rex 3 Specifications
Design & Build
| Case size(s) | 48 mm |
|---|---|
| Variants (India) | Single model (48 mm) |
| Dial shape | Round |
| Dimensions (H × W × T) | 48.5 × 48.5 × 13.75 mm |
| Weight | 68.3 g (without strap) |
| Case material | Polymer middle frame |
| Bezel material | Stainless steel |
| Display glass / lens | Gorilla Glass |
| Strap material | Liquid silicone |
| Strap width / size | 22 mm width; fits 145–210 mm wrists |
| Water & dust resistance | 10 ATM; freediving to 147 feet (EN13319, ISO 6425, GB/T 18828 certified) |
| Colour options | Onyx, Lava, Haze Gray |
| Buttons / crown | 4 buttons |
| Buckle | Classic pin buckle |
| Vibration motor | Linear motor |
| Operating temperature | -30 °C to 70 °C |
| Glove mode | Touch works with gloves up to 2 mm thick |
Display
| Display type | AMOLED |
|---|---|
| Screen size | 1.5 inches |
| Resolution | 480 × 480 pixels |
| Pixel density | 322 ppi |
| Peak brightness | 2,000 nits |
| Touchscreen | Yes |
| Watch faces | 400+ watch faces |
| Night Display | red, green or orange illumination |
Performance & Software
| Storage | 26 GB |
|---|---|
| Operating system | Zepp OS 4 |
| Companion app | Zepp App |
| Phone compatibility | Android 7.0 and above, iOS 14.0 and above |
| AI features | Zepp Flow voice assistant with voice control Zepp Coach AI training plans (3K, 5K, 10K, half and full marathon) |
| Third-party apps | Strava, Relive, adidas Running, komoot, Google Fit, Apple Health |
| Mini apps | Hundreds available |
Connectivity
| Bluetooth | Bluetooth 5.2, BLE |
|---|---|
| Wi-Fi | Wi-Fi 2.4 GHz |
| GPS / GNSS | Built-in GPS, dual-band, 6 satellite positioning systems |
Calling & Audio
| Microphone | Yes |
|---|---|
| Voice assistant | Zepp Flow (select countries and regions) |
| Voice memo | Supported |
Health Tracking
| Heart rate | 24-hour heart rate monitoring; abnormally high and low heart rate alerts |
|---|---|
| SpO2 (blood oxygen) | 24-hour blood-oxygen monitoring; low blood-oxygen alerts |
| Sleep tracking | Sleep stages (including REM), daytime naps, sleep breathing quality, sleep score |
| Stress tracking | 24-hour stress monitoring; high stress alerts |
| HRV | Heart rate variability supported |
| Other | PAI health assessment |
| One-tap measurement | Supported |
| Other | Altitude prompts for blood-oxygen testing |
Sports & Fitness
| Sports modes | 170+ sports modes |
|---|---|
| Auto workout detection | Smart recognition of 25 strength training movements and 8 sports movements |
| Training insights | VO2 max (running modes), Zepp Coach |
| Maps & navigation | Offline maps, turn-by-turn directions, route import, real-time navigation and tracking, save location point, back-to-start navigation, route deviation alerts |
| Running | Track Run mode, smart trajectory correction, virtual pacer |
| Strength | rep and set tracking |
| Accessories | heart rate belt, running power meter, cycling power meter, cadence sensor |
| Maps | topographic contour maps, ski maps |
| GPS modes | Automatic, Accuracy, Power Saving, Long Battery Life, Max Battery Life |
Sensors
| Sensors | BioTracker PPG biometric sensor (supports blood-oxygen), Accelerometer, Gyroscope, Geomagnetic sensor, Barometric altimeter, Ambient light sensor, Temperature sensor |
|---|
Smart Features
| Notifications | Call, SMS and app notifications; call quick reply (Android) |
|---|---|
| Music | Phone music control; up to 26 GB music storage (MP3, needs Bluetooth headphones) |
| Find my phone | Yes |
| Camera control | Yes (iOS only) |
| Outdoor tools | compass, air pressure, altitude assistant, ultra-low temperature mode, GPS calibration |
| Weather | weather display, sunrise and sunset, moon phase, tides, storm warning alerts |
| Cards | membership cards (up to 20) |
| Organiser | events reminder, to-do list |
| Timers | alarm, world clock, stopwatch, Pomodoro timer |
Battery & Charging
| Battery capacity | 700 mAh (rated) |
|---|---|
| Battery life (typical) | Up to 27 days (typical use) |
| Battery life (heavy use / GPS) | Up to 13 days (heavy use); up to 42 hours (GPS accuracy mode) |
| Charging method | Magnetic charging base |
| Charging time | About 3 hours |
| Battery saver mode | Up to 40 days |
| Clock mode | Up to 81 days |
| GPS power-saving mode | Up to 72 hours |
| GPS long battery life mode | Up to 114 hours |
| GPS max battery life | Up to 180 hours |
| Low temperature, GPS on | Up to 28 hours |
| Low temperature, GPS off | Up to 32 days |
In the Box & Warranty
| Box contents | Smartwatch (with standard strap), magnetic charging base (no USB Type-C cable), instruction manual |
|---|---|
| Warranty | 1 year |
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