In depth comparison and review of Samsung Gear S3 Classic and Amazfit T-Rex 2. 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 | Samsung Gear S3 Classic | Amazfit T-Rex 2 |
|---|
| Product Type | Smart watch | Smart watch |
|---|---|---|
| Operating System | Tizen OS | Zepp OS |
| Supported Host Device OS | Android | iOS 12 or later, Android 7.0 (Nougat) or later |
| Activity/Sport | - | Multisport |
| Wearing Style | Watch style | Watch style |
| Audio Input | Microphone | - |
| Audio Output | Speaker | - |
| Width | 46 mm | 47.1 mm |
| Height | 49 mm | 47.1 mm |
| Depth | 12.9 mm | 13.65 mm |
| Weight | 57 g | 66.5 g |
| Body Material | Stainless steel | Polymer |
| Protection | Dustproof, waterproof | Shockproof, water-resistant, salt fog protection, freezeproof, heat-resistant |
| Clock Display | Yes | Yes |
| FEATURES | Samsung Gear S3 Classic | Amazfit T-Rex 2 |
|---|
| Sensors | Accelerometer, ambient light sensor, barometer, altimeter, gyro sensor, heart rate | Accelerometer, ambient light sensor, digital compass, gyro sensor, geomagnetic sensor, barometric altimeter, BioTracker PPG 3.0 biometric sensor |
|---|---|---|
| Tracking Data | Distance, time, speed, calories burned, activity, heart rate, steps taken, water vs. caffeine intake | Distance, calories burned, sleep activity, heart rate, blood oxygen saturation, sleep stages, stress level, menstrual cycle |
| Modes | - | 150+ sports modes |
| Goal Setting | Yes | Yes |
| Features | Find phone function, making a call | 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 |
| Notifications | - | Missed calls, calendar, incoming calls, applications |
| Vibrating Alert | Yes | Yes |
| Feedback Type | - | Vibration alert, visual interface |
| Navigation (GPS) | - | GPS receiver |
| CONNECTIVITY | Samsung Gear S3 Classic | Amazfit T-Rex 2 |
|---|
| Wireless Interface | IEEE 802.11b/g/n, NFC, Bluetooth 4.2 | Bluetooth 5.0 BLE |
|---|
| DISPLAY | Samsung Gear S3 Classic | Amazfit T-Rex 2 |
|---|
| Type | Super AMOLED - colour | AMOLED - colour |
|---|---|---|
| Resolution | 360 x 360 pixels | 454 x 454 pixels |
| Screen Size | 1.3" | 1.39" |
| Pixel Density | - | 326 ppi |
| Screen Protection | Corning Gorilla Glass SR+ (scratch resistant glass) | - |
| Always On Display (AOD) | Yes | Yes |
| INPUT DEVICE | Samsung Gear S3 Classic | Amazfit T-Rex 2 |
|---|
| Type | Touch sensitive screen | Touch sensitive screen, touch buttons |
|---|
| CASE | Samsung Gear S3 Classic | Amazfit T-Rex 2 |
|---|
| Case Size | 46 mm | - |
|---|---|---|
| Case Shape | - | Round |
| Case Details | Silver | Ember black | Wild green | Desert khaki | Astro black and gold |
| BAND | Samsung Gear S3 Classic | Amazfit T-Rex 2 |
|---|
| Band Type | Band | Strap |
|---|---|---|
| Fits Wrist with Circumference | - | 140-205 mm |
| Clasp Type | Buckle | Buckle |
| Band Material | Leather | Silicone |
| Band Colour | Black | Ember black | Wild green | Desert khaki |
| STORAGE | Samsung Gear S3 Classic | Amazfit T-Rex 2 |
|---|
| Storage Capacity | 4 GB | - |
|---|
| RAM | Samsung Gear S3 Classic | Amazfit T-Rex 2 |
|---|
| RAM Size | 768 MB | - |
|---|
| CPU | Samsung Gear S3 Classic | Amazfit T-Rex 2 |
|---|
| Manufacturer | Samsung | - |
|---|---|---|
| CPU Type | Exynos 7270 | - |
| Clock Speed | 1 GHz | - |
| BATTERY | Samsung Gear S3 Classic | Amazfit T-Rex 2 |
|---|
| Capacity | 380 mAh | 500 mAh |
|---|---|---|
| Battery Life | 4 day(s) | 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 |
| Rechargeable Battery | - | Yes |
| Recharge Time | - | 2 hour(s) |
| Wireless Charging | Yes | - |
| MISCELLANEOUS | Samsung Gear S3 Classic | Amazfit T-Rex 2 |
|---|
| Included Accessories | Power adapter, wireless charging dock | Magnetic charging dock |
|---|---|---|
| Preloaded Software | Stopwatch, Contacts, E-mail, Messages, Music Player, Alarm, Phone, Gallery, Weather, Navigation, Timer, Bloomberg | Zepp App |
| Compliant Standards | MIL-STD 810G, IP68 | MIL-STD 810G |
| Max Depth of Water Resistance | - | 100 m |
| Manufacturer Model Number | SM-R770 | - |
| Warranty | - | 1-year warranty |
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