In depth comparison and review of Amazfit T-Rex 2 and Amazfit GTR 4. Compare sizes, functions, displays, batteries and other important specifications and features to easily choose the right smartwatch for you. Our goal is to help you uncover differences between the products and find the watch that will best fit your needs.
| GENERAL | Amazfit T-Rex 2 | Amazfit GTR 4 |
|---|
| Product Type | Smart watch | Smart watch |
|---|---|---|
| Operating System | Zepp OS | Zepp OS |
| Supported Host Device OS | iOS 12 or later, Android 7.0 (Nougat) or later | iOS 12 or later, Android 7.0 (Nougat) or later |
| Activity/Sport | Multisport | Multisport |
| Wearing Style | Watch style | Watch style |
| Audio Input | - | Microphone |
| Audio Output | - | Speaker |
| Width | 47.1 mm | - |
| Height | 47.1 mm | - |
| Depth | 13.65 mm | - |
| Weight | 66.5 g | - |
| Body Details | - | With band: 34 g |
| Body Material | Polymer | Aluminium alloy frame |
| Protection | Shockproof, water-resistant, salt fog protection, freezeproof, heat-resistant | Water-resistant |
| Clock Display | Yes | Yes |
| FEATURES | Amazfit T-Rex 2 | Amazfit GTR 4 |
|---|
| Sensors | Accelerometer, ambient light sensor, digital compass, gyro sensor, geomagnetic sensor, barometric altimeter, BioTracker PPG 3.0 biometric sensor | Accelerometer, ambient light sensor, geomagnetic sensor, barometric altimeter, gyroscope, BioTracker PPG 4.0 biometric sensor |
|---|---|---|
| Tracking Data | Distance, calories burned, sleep activity, heart rate, blood oxygen saturation, sleep stages, stress level, menstrual cycle | Time, calories burned, activity, sleep activity, heart rate, steps taken, blood oxygen saturation, sleep stages, stress level, menstrual cycle, personal activity intelligence (PAI), recovery time, training load, sleep quality score, nap, sleep breathing quality |
| Modes | 150+ sports modes | 154 sports modes |
| Goal Setting | Yes | Yes |
| Features | Camera remote control, find phone function, flashlight, alarm, realtime location tracking, weather information, event reminders, PAI Health Assessment System, pomodoro timer, stopwatch timer, PeakBeats workout status algorithm, OxygenBeats algorithm, ExerSense algorithm, SomnusCare, Dual-band navigation | Strength training guidance, camera remote control, find phone function, answering a call, VO2 max, making a call, Find my Device, breathing training function, store & play music, sunrise/sunset times, auto pause, auto lap, realtime location tracking, music playback control, weather information, PeakBeats workout status algorithm, ExerSense algorithm, Dual-band navigation, linear motor, Virtual Pacer, track run mode, smart trajectory correction, route file import |
| Notifications | Missed calls, calendar, incoming calls, applications | SMS, incoming calls, applications, high and low heart rate, low blood-oxygen, high stress level |
| Vibrating Alert | Yes | Yes |
| Feedback Type | Vibration alert, visual interface | Audio alert, vibration alert, visual interface |
| Navigation (GPS) | GPS receiver | - |
| Internet of Things (IoT) Compatible | - | Yes |
| IoT Intelligent Assistant | - | Alexa built-in |
| IoT Voice Controlled | - | Direct |
| CONNECTIVITY | Amazfit T-Rex 2 | Amazfit GTR 4 |
|---|
| Wireless Interface | Bluetooth 5.0 BLE | Wi-Fi, Bluetooth 5.0 BLE |
|---|
| DISPLAY | Amazfit T-Rex 2 | Amazfit GTR 4 |
|---|
| Type | AMOLED - colour | AMOLED - colour |
|---|---|---|
| Resolution | 454 x 454 pixels | 466 x 466 pixels |
| Screen Size | 1.39" | 1.43" |
| Pixel Density | 326 ppi | 326 ppi |
| Screen Protection | - | Fingerprint-resistant coating, tempered glass, anti-glare bezel |
| Always On Display (AOD) | Yes | Yes |
| INPUT DEVICE | Amazfit T-Rex 2 | Amazfit GTR 4 |
|---|
| Type | Touch sensitive screen, touch buttons | Touch sensitive screen, push buttons |
|---|
| CASE | Amazfit T-Rex 2 | Amazfit GTR 4 |
|---|
| Case Shape | Round | Circular |
|---|---|---|
| Case Back | - | Polycarbonate |
| Case Details | Ember black | Wild green | Desert khaki | Astro black and gold | Aluminium alloy |
| BAND | Amazfit T-Rex 2 | Amazfit GTR 4 |
|---|
| Band Type | Strap | Strap |
|---|---|---|
| Band Width | - | 22 mm |
| Fits Wrist with Circumference | 140-205 mm | 150-215 mm |
| Changeable | - | Yes |
| Clasp Type | Buckle | Pin buckle |
| Band Material | Silicone | Fluoroelastomer |
| Band Colour | Ember black | Wild green | Desert khaki | Superspeed black | Vintage brown leather |
| STORAGE | Amazfit T-Rex 2 | Amazfit GTR 4 |
|---|
| User Memory | - | 2.3 GB |
|---|
| BATTERY | Amazfit T-Rex 2 | Amazfit GTR 4 |
|---|
| Capacity | 500 mAh | 475 mAh |
|---|---|---|
| Battery Life | 24 day(s) | - |
| Battery Life Details | Typical usage - up to 24 days Battery safe mode - up to 45 days Heavy usage - up to 10 days Accurate mode (with GPS) - up to 26 hour(s) Balanced mode (with GPS) - up to 50 hour(s) Power saving mode (with GPS) - up to 58 hour(s) Ultra-low temperature (with GPS) - up to 10 hour(s) Ultra-low temperature (without GPS) - up to 9 days |
Typical usage - up to 14 days Battery Saver Watch Mode - up to 24 days Clock - up to 50 days Heavy usage - up to 7 days Accurate mode (with GPS) - up to 25 hours GPS mode - up to 44 hours Power saving mode (with GPS) - up to 52 hours |
| Rechargeable Battery | Yes | Yes |
| Recharge Time | 2 hour(s) | 2 hour(s) |
| MISCELLANEOUS | Amazfit T-Rex 2 | Amazfit GTR 4 |
|---|
| Included Accessories | Magnetic charging dock | Magnetic charging cable |
|---|---|---|
| Preloaded Software | Zepp App | To Do List, Games, Stopwatch, Calendar, World clock, Alarm Clock, Reminders, Timer, Compass, Countdown timer |
| Compliant Standards | MIL-STD 810G | - |
| Max Depth of Water Resistance | 100 m | 50 m |
| Max Operating Temperature | - | 45 °C |
| Min Operating Temperature | - | 0 °C |
| Warranty | 1-year warranty | 1-year warranty |
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