In depth comparison and review of Garmin vívoactive 4S 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 vívoactive 4S | 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 | 40 mm | 47.1 mm |
| Height | 40 mm | 47.1 mm |
| Depth | 12.7 mm | 13.65 mm |
| Weight | 40 g | 66.5 g |
| Body Material | Stainless steel, fibre-reinforced polymer | Polymer |
| Protection | Water-resistant | Shockproof, water-resistant, salt fog protection, freezeproof, heat-resistant |
| Clock Display | Yes | Yes |
| FEATURES | Garmin vívoactive 4S | Amazfit T-Rex 2 |
|---|
| Sensors | Accelerometer, thermometre, altimeter, gyro sensor, heart rate, electromagnetic compass, Pulse Ox sensor | Accelerometer, ambient light sensor, digital compass, gyro sensor, geomagnetic sensor, barometric altimeter, BioTracker PPG 3.0 biometric sensor |
|---|---|---|
| Tracking Data | Distance, time, calories burned, sleep activity, heart rate, steps taken, floors climbed, blood oxygen saturation, stress level, menstrual cycle, breathing rate, hydration | 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, find phone function, idle alert, HR zones, Move IQ, Garmin Connect compatible, Find my Device, store & play music, rejecting a call, Garmin Elevate, TrueUp, 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 | SMS, incoming calls | Missed calls, calendar, incoming calls, applications |
| Vibrating Alert | - | Yes |
| Feedback Type | - | Vibration alert, visual interface |
| Navigation (GPS) | GPS/GLONASS/Galileo receiver | GPS receiver |
| Payment Technology | Garmin Pay | - |
| CONNECTIVITY | Garmin vívoactive 4S | Amazfit T-Rex 2 |
|---|
| Wireless Interface | Bluetooth, Wi-Fi, NFC, ANT+ | Bluetooth 5.0 BLE |
|---|
| DISPLAY | Garmin vívoactive 4S | Amazfit T-Rex 2 |
|---|
| Type | Memory-in-Pixel LCD - colour | AMOLED - colour |
|---|---|---|
| Resolution | 218 x 218 pixels | 454 x 454 pixels |
| Screen Size | 1.1" | 1.39" |
| Pixel Density | - | 326 ppi |
| Screen Protection | Corning Gorilla Glass 3 (scratch resistant glass) | - |
| Always On Display (AOD) | - | Yes |
| INPUT DEVICE | Garmin vívoactive 4S | Amazfit T-Rex 2 |
|---|
| Type | Touch sensitive screen, touch buttons | Touch sensitive screen, touch buttons |
|---|
| CASE | Garmin vívoactive 4S | Amazfit T-Rex 2 |
|---|
| Case Size | 40 mm | - |
|---|---|---|
| Case Shape | Round | Round |
| Bezel | Slate stainless steeel | - |
| Case Back | Polymer | - |
| Case Details | Black | Powder grey | White | Dust rose | Ember black | Wild green | Desert khaki | Astro black and gold |
| BAND | Garmin vívoactive 4S | Amazfit T-Rex 2 |
|---|
| Band Type | Band | Strap |
|---|---|---|
| Band Width | 18 mm | - |
| Fits Wrist with Circumference | 110-175 mm | 140-205 mm |
| Clasp Type | Buckle | Buckle |
| Band Material | Silicone | Silicone |
| Band Colour | Black | Powder grey | White | Dust rose | Ember black | Wild green | Desert khaki |
| BATTERY | Garmin vívoactive 4S | Amazfit T-Rex 2 |
|---|
| Technology | Lithium polymer | - |
|---|---|---|
| Capacity | - | 500 mAh |
| Battery Life | 7 day(s) | 24 day(s) |
| Battery Life Details | Smartwatch mode - up to 7 days GPS mode - up to 15 hour(s) Smartwatch with music mode - up to 6 hour(s) GPS with Music mode - up to 5 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 |
| Rechargeable Battery | Yes | Yes |
| Recharge Time | - | 2 hour(s) |
| MISCELLANEOUS | Garmin vívoactive 4S | Amazfit T-Rex 2 |
|---|
| Included Accessories | Charging/data cable | Magnetic charging dock |
|---|---|---|
| Preloaded Software | Garmin Pay, Garmion Connect IQ | Zepp App |
| Compliant Standards | - | MIL-STD 810G |
| Max Depth of Water Resistance | 50 m | 100 m |
| Max Operating Temperature | 60 °C | - |
| Min Operating Temperature | -20 °C | - |
| Warranty | - | 1-year warranty |
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