In depth comparison and review of Suunto 3 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 | Suunto 3 | Amazfit T-Rex 2 |
|---|
| Product Type | Sport watch | Smart watch |
|---|---|---|
| Operating System | - | Zepp OS |
| Supported Host Device OS | iOS, Android | iOS 12 or later, Android 7.0 (Nougat) or later |
| Activity/Sport | Running, swimming, cycling | Multisport |
| Wearing Style | Watch style | Watch style |
| Width | 43 mm | 47.1 mm |
| Height | 43 mm | 47.1 mm |
| Depth | - | 13.65 mm |
| Weight | 36 g | 66.5 g |
| Body Material | ABS case | Polymer |
| Protection | Waterproof | Shockproof, water-resistant, salt fog protection, freezeproof, heat-resistant |
| Colours | Light gold, pebble white | - |
| Clock Display | Yes | Yes |
| FEATURES | Suunto 3 | Amazfit T-Rex 2 |
|---|
| Sensors | Accelerometer, heart rate | Accelerometer, ambient light sensor, digital compass, gyro sensor, geomagnetic sensor, barometric altimeter, BioTracker PPG 3.0 biometric sensor |
|---|---|---|
| Tracking Data | Distance, speed, calories burned, activity, sleep activity, heart rate, steps taken, cadence, stress level, lap time | Distance, calories burned, sleep activity, heart rate, blood oxygen saturation, sleep stages, stress level, menstrual cycle |
| Modes | Exercise mode | 150+ sports modes |
| Goal Setting | Yes | Yes |
| Features | GPS via mobile, sunrise/sunset times, weather information | 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 | Vibration alert, visual interface |
| Navigation (GPS) | - | GPS receiver |
| Keypad Lock | Yes | - |
| CONNECTIVITY | Suunto 3 | Amazfit T-Rex 2 |
|---|
| Wireless Interface | Bluetooth | Bluetooth 5.0 BLE |
|---|
| DISPLAY | Suunto 3 | Amazfit T-Rex 2 |
|---|
| Type | LED - colour | AMOLED - colour |
|---|---|---|
| Resolution | 218 x 218 pixels | 454 x 454 pixels |
| Screen Size | - | 1.39" |
| Pixel Density | - | 326 ppi |
| Always On Display (AOD) | - | Yes |
| INPUT DEVICE | Suunto 3 | Amazfit T-Rex 2 |
|---|
| Type | - | Touch sensitive screen, touch buttons |
|---|
| CASE | Suunto 3 | Amazfit T-Rex 2 |
|---|
| Crystal Type | Polyamide | - |
|---|---|---|
| Case Shape | Round | Round |
| Bezel | Stainless steel | - |
| Case Details | Slate grey | Slate grey/copper | Moss grey | Granite red | Black | Ember black | Wild green | Desert khaki | Astro black and gold |
| BAND | Suunto 3 | Amazfit T-Rex 2 |
|---|
| Band Type | Strap | Strap |
|---|---|---|
| Band Width | 20 mm | - |
| Fits Wrist with Circumference | 120-210 mm | 140-205 mm |
| Clasp Type | Buckle | Buckle |
| Band Material | Silicone | Silicone |
| Band Colour | Slate grey | Moss grey | Granite red | Black | Ember black | Wild green | Desert khaki |
| BATTERY | Suunto 3 | Amazfit T-Rex 2 |
|---|
| Technology | Lithium Ion | - |
|---|---|---|
| Capacity | - | 500 mAh |
| Battery Life | 5 day(s) | 24 day(s) |
| Battery Life Details | Training mode/GPS off - up to 40 hour(s) Training mode/GPS on - up to 30 hour(s) |
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 |
| Standby Time | 10 days | - |
| Rechargeable Battery | Yes | Yes |
| Recharge Time | - | 2 hour(s) |
| MISCELLANEOUS | Suunto 3 | Amazfit T-Rex 2 |
|---|
| Included Accessories | USB charging cable | Magnetic charging dock |
|---|---|---|
| Preloaded Software | Stopwatch, Alarm Clock | Zepp App |
| Compliant Standards | - | MIL-STD 810G |
| Max Depth of Water Resistance | 30 m | 100 m |
| Max Operating Temperature | 60 °C | - |
| Min Operating Temperature | -20 °C | - |
| Warranty | - | 1-year warranty |
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