In depth comparison and review of Garmin Forerunner 55 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 | Garmin Forerunner 55 | 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 | - | Multisport |
| Wearing Style | Watch style | Watch style |
| Width | 42 mm | 47.1 mm |
| Height | 42 mm | 47.1 mm |
| Depth | 11.6 mm | 13.65 mm |
| Weight | 37 g | 66.5 g |
| Body Material | - | Polymer |
| Protection | Waterproof | Shockproof, water-resistant, salt fog protection, freezeproof, heat-resistant |
| Colours | Monterra grey | - |
| Clock Display | Yes | Yes |
| FEATURES | Garmin Forerunner 55 | Amazfit T-Rex 2 |
|---|
| Sensors | Accelerometer, optical heart sensor | 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, sleep activity, heart rate, stress level | 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 | Music remote handling, idle alert, Garmin Connect compatible, Body Battery | 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 | Calendar, Email, social apps | Missed calls, calendar, incoming calls, applications |
| Vibrating Alert | Yes | Yes |
| Feedback Type | - | Vibration alert, visual interface |
| Navigation (GPS) | GPS receiver | GPS receiver |
| CONNECTIVITY | Garmin Forerunner 55 | Amazfit T-Rex 2 |
|---|
| Wireless Interface | Bluetooth, ANT+ | Bluetooth 5.0 BLE |
|---|
| DISPLAY | Garmin Forerunner 55 | Amazfit T-Rex 2 |
|---|
| Type | Memory-in-Pixel LCD - colour - transflective | AMOLED - colour |
|---|---|---|
| Resolution | 208 x 208 pixels | 454 x 454 pixels |
| Screen Size | 1.04" | 1.39" |
| Pixel Density | - | 326 ppi |
| Screen Protection | Chemically strengthened glass | - |
| Always On Display (AOD) | - | Yes |
| INPUT DEVICE | Garmin Forerunner 55 | Amazfit T-Rex 2 |
|---|
| Type | Touch buttons | Touch sensitive screen, touch buttons |
|---|
| CASE | Garmin Forerunner 55 | Amazfit T-Rex 2 |
|---|
| Case Shape | Round | Round |
|---|---|---|
| Case Details | Black | White | Aqua green | Ember black | Wild green | Desert khaki | Astro black and gold |
| BAND | Garmin Forerunner 55 | Amazfit T-Rex 2 |
|---|
| Band Type | Band | Strap |
|---|---|---|
| Fits Wrist with Circumference | - | 140-205 mm |
| Changeable | Yes | - |
| Clasp Type | Buckle | Buckle |
| Band Material | Silicone | Silicone |
| Band Colour | Black | White | Aqua green | Ember black | Wild green | Desert khaki |
| BATTERY | Garmin Forerunner 55 | Amazfit T-Rex 2 |
|---|
| Capacity | - | 500 mAh |
|---|---|---|
| Battery Life | 14 day(s) | 24 day(s) |
| Battery Life Details | GPS mode - up to 20 hour(s) Smartwatch mode - up to 14 days |
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 | Yes |
| Recharge Time | - | 2 hour(s) |
| MISCELLANEOUS | Garmin Forerunner 55 | Amazfit T-Rex 2 |
|---|
| Included Accessories | Charging/data cable | Magnetic charging dock |
|---|---|---|
| Preloaded Software | - | Zepp App |
| Compliant Standards | - | MIL-STD 810G |
| Max Depth of Water Resistance | 50 m | 100 m |
| Warranty | 1-year warranty | 1-year warranty |
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