In depth comparison and review of Amazfit T-Rex Pro and Amazfit GTS 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 Pro | Amazfit GTS 4 |
|---|
| Product Type | Smart watch | Smart watch |
|---|---|---|
| Operating System | - | Zepp OS |
| Supported Host Device OS | iOS 10 or later, Android 5.0 (Lollipop) 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 | - | 36.5 mm |
| Height | - | 42.7 mm |
| Depth | - | 9.9 mm |
| Weight | - | 27 g |
| Body Details | With band: 59.4 g | - |
| Body Material | Polycarbonate | Stainless steel, aluminium alloy frame |
| Protection | Water-resistant, temperature protection, salt fog protection, freezeproof | Water-resistant |
| Colours | Desert grey | - |
| Clock Display | Yes | Yes |
| FEATURES | Amazfit T-Rex Pro | Amazfit GTS 4 |
|---|
| Sensors | Ambient light sensor, 3-axis gyro sensor, geomagnetic sensor, barometric altimeter, 3-axis accelerometer, BioTracker 2 PPG biological tracking optical 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 | 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 | - | 154 sports modes |
| Goal Setting | Yes | Yes |
| Features | Music remote handling, event reminders | 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, instant message reply, PeakBeats workout status algorithm, ExerSense algorithm, Dual-band navigation, linear motor, Virtual Pacer, track run mode, smart trajectory correction, route file import |
| Notifications | SMS, incoming calls, applications | SMS, incoming calls, applications, high and low heart rate, low blood-oxygen, high stress level |
| Vibrating Alert | Yes | Yes |
| Feedback Type | - | Audio alert, vibration alert, visual interface |
| Navigation (GPS) | GPS/GLONASS/Galileo/BeiDou receiver | - |
| Internet of Things (IoT) Compatible | - | Yes |
| IoT Intelligent Assistant | - | Alexa built-in |
| IoT Voice Controlled | - | Direct |
| CONNECTIVITY | Amazfit T-Rex Pro | Amazfit GTS 4 |
|---|
| Wireless Interface | Bluetooth 5.0 | Wi-Fi, Bluetooth 5.0 |
|---|
| DISPLAY | Amazfit T-Rex Pro | Amazfit GTS 4 |
|---|
| Type | AMOLED - colour | AMOLED - colour |
|---|---|---|
| Resolution | 360 x 360 pixels | 390 x 450 pixels |
| Screen Size | 1.3" | 1.75" |
| Pixel Density | - | 341 ppi |
| Screen Protection | Tempered glass | Tempered glass |
| Always On Display (AOD) | Yes | Yes |
| INPUT DEVICE | Amazfit T-Rex Pro | Amazfit GTS 4 |
|---|
| Type | Touch sensitive screen | Touch sensitive screen, push button |
|---|
| CASE | Amazfit T-Rex Pro | Amazfit GTS 4 |
|---|
| Case Shape | Round | Rectangular |
|---|---|---|
| Case Details | Meteorite black | Steel blue | Aluminium alloy |
| BAND | Amazfit T-Rex Pro | Amazfit GTS 4 |
|---|
| Band Type | Band | Strap |
|---|---|---|
| Band Width | 22 mm | 20 mm |
| Fits Wrist with Circumference | - | 140-200 mm |
| Changeable | - | Yes |
| Clasp Type | Buckle | Pin buckle |
| Band Material | Silicone rubber | Fluoroelastomer |
| Band Colour | Meteorite black | Blue steel | Infinite black | Misty white | Rosebud pink |
| STORAGE | Amazfit T-Rex Pro | Amazfit GTS 4 |
|---|
| User Memory | - | 2.3 GB |
|---|
| BATTERY | Amazfit T-Rex Pro | Amazfit GTS 4 |
|---|
| Technology | Lithium polymer | - |
|---|---|---|
| Capacity | 390 mAh | 300 mAh |
| Battery Life | 18 day(s) | - |
| Battery Life Details | Typical usage - up to 18 days Heavy usage - up to 9 days GPS mode - up to 40 hour(s) |
Typical usage - up to 8 days Battery Saver Watch Mode - up to 16 days Clock - up to 30 days Heavy usage - up to 4 days Accurate mode (with GPS) - up to 16 hours GPS mode - up to 28 hours Power saving mode (with GPS) - up to 33 hours |
| Rechargeable Battery | Yes | Yes |
| Recharge Time | 1.5 hour(s) | 2 hour(s) |
| MISCELLANEOUS | Amazfit T-Rex Pro | Amazfit GTS 4 |
|---|
| Included Accessories | Magnetic charging dock | Magnetic charging cable |
|---|---|---|
| Preloaded Software | - | To Do List, Games, Stopwatch, Calendar, World clock, Alarm Clock, Reminders, Timer, Compass, Countdown timer |
| Max Depth of Water Resistance | 100 m | 50 m |
| Max Operating Temperature | 70 °C | 45 °C |
| Min Operating Temperature | -40 °C | 0 °C |
| Warranty | 1-year warranty | 1-year warranty |
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