In depth comparison and review of Amazfit T-Rex Pro and Samsung Galaxy Watch4. 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 | Samsung Galaxy Watch4 |
|---|
| Product Type | Smart watch | Smart watch |
|---|---|---|
| Operating System | - | Wear OS by Samsung |
| Supported Host Device OS | iOS 10 or later, Android 5.0 (Lollipop) or later | Android 6.0 (Marshmallow) or later |
| Activity/Sport | Multisport | - |
| Wearing Style | Watch style | Watch style |
| Width | - | 39.3 mm |
| Height | - | 40.4 mm |
| Depth | - | 9.7 mm |
| Weight | - | 25.9 g |
| Body Details | With band: 59.4 g | - |
| Body Material | Polycarbonate | Aluminium |
| Protection | Water-resistant, temperature protection, salt fog protection, freezeproof | Waterproof |
| Colours | Desert grey | - |
| Clock Display | Yes | Yes |
| FEATURES | Amazfit T-Rex Pro | Samsung Galaxy Watch4 |
|---|
| 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, barometer, gyro sensor, bioimpedance sensor, electromagnetic compass, optical heart sensor, electrical heart sensor |
|---|---|---|
| Tracking Data | Distance, calories burned, sleep activity, heart rate, blood oxygen saturation | Distance, calories burned, activity, sleep activity, heart rate, steps taken, blood oxygen saturation, body composition, ECG, REM phases |
| Goal Setting | Yes | Yes |
| Features | Music remote handling, event reminders | Find phone function, VO2 max, automatic exercise recognition, personalised coaching |
| Notifications | SMS, incoming calls, applications | Calendar, SMS, social apps, incoming calls |
| Vibrating Alert | Yes | Yes |
| Feedback Type | - | Vibration alert, visual interface |
| Digital Player | - | MP3, WAV, AAC, AMR, M4A, OGG, 3GA, AWB, OGA |
| Navigation (GPS) | GPS/GLONASS/Galileo/BeiDou receiver | GPS/GLONASS/Galileo/BeiDou receiver |
| CELLULAR | Amazfit T-Rex Pro | Samsung Galaxy Watch4 |
|---|
| Technology | - | WCDMA (UMTS) |
|---|---|---|
| Mobile Broadband Generation | - | 4G |
| SIM Card Type | - | Electronic SIM card (e-SIM) |
| CONNECTIVITY | Amazfit T-Rex Pro | Samsung Galaxy Watch4 |
|---|
| Wireless Interface | Bluetooth 5.0 | NFC, IEEE 802.11a/b/g/n, Bluetooth 5.0 |
|---|---|---|
| Bluetooth Profiles | - | Hands-Free Profile (HFP), Headset Profile (HSP), Advanced Audio Distribution Profile (A2DP), Audio/Video Remote Control Profile (AVRCP) |
| DISPLAY | Amazfit T-Rex Pro | Samsung Galaxy Watch4 |
|---|
| Type | AMOLED - colour | Super AMOLED - colour |
|---|---|---|
| Resolution | 360 x 360 pixels | 396 x 396 pixels |
| Screen Size | 1.3" | 1.19" |
| Aspect Ratio | - | Full circle |
| Pixel Density | - | 330 ppi |
| Colour Depth | - | 24-bit (16.7 million colours) |
| Screen Protection | Tempered glass | Corning Gorilla Glass DX+ (scratch resistant glass) |
| Always On Display (AOD) | Yes | Yes |
| INPUT DEVICE | Amazfit T-Rex Pro | Samsung Galaxy Watch4 |
|---|
| Type | Touch sensitive screen | Touch sensitive screen, push buttons |
|---|
| CASE | Amazfit T-Rex Pro | Samsung Galaxy Watch4 |
|---|
| Case Size | - | 40 mm |
|---|---|---|
| Case Shape | Round | Round |
| Case Details | Meteorite black | Steel blue | Pink gold | Black | Silver |
| BAND | Amazfit T-Rex Pro | Samsung Galaxy Watch4 |
|---|
| Band Type | Band | Sport band |
|---|---|---|
| Band Width | 22 mm | - |
| Changeable | - | Yes |
| Clasp Type | Buckle | Buckle |
| Band Material | Silicone rubber | - |
| Band Colour | Meteorite black | Blue steel | Pink | Black | White |
| STORAGE | Amazfit T-Rex Pro | Samsung Galaxy Watch4 |
|---|
| Storage Capacity | - | 16 GB |
|---|---|---|
| User Memory | - | 7.6 GB |
| RAM | Amazfit T-Rex Pro | Samsung Galaxy Watch4 |
|---|
| RAM Size | - | 1.5 GB |
|---|
| CPU | Amazfit T-Rex Pro | Samsung Galaxy Watch4 |
|---|
| Manufacturer | - | Samsung |
|---|---|---|
| CPU Type | - | Exynos W920 |
| Clock Speed | - | 1.18 GHz |
| BATTERY | Amazfit T-Rex Pro | Samsung Galaxy Watch4 |
|---|
| Technology | Lithium polymer | - |
|---|---|---|
| Capacity | 390 mAh | 247 mAh |
| Battery Life | 18 day(s) | 40 hours |
| Battery Life Details | Typical usage - up to 18 days Heavy usage - up to 9 days GPS mode - up to 40 hour(s) |
- |
| Rechargeable Battery | Yes | Yes |
| Recharge Time | 1.5 hour(s) | - |
| Wireless Charging | - | Yes |
| Wireless Charging Standards | - | WPC, Wireless PowerShare |
| MISCELLANEOUS | Amazfit T-Rex Pro | Samsung Galaxy Watch4 |
|---|
| Included Accessories | Magnetic charging dock | Wireless charging dock |
|---|---|---|
| Compliant Standards | - | MIL-STD 810G, IP68 |
| SAR Value | - | 0.729 W/kg (head), 2.594 W/kg (limb) |
| Max Depth of Water Resistance | 100 m | 50 m |
| Max Operating Temperature | 70 °C | - |
| Min Operating Temperature | -40 °C | - |
| Manufacturer Model Number | - | SM-R865F |
| Warranty | 1-year warranty | 2-year warranty |
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