In depth comparison and review of Garmin Forerunner 745 and Amazfit T-Rex Pro. 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 745 | Amazfit T-Rex Pro |
|---|
| Product Type | Sport watch | Smart watch |
|---|---|---|
| Supported Host Device OS | iOS, Android | iOS 10 or later, Android 5.0 (Lollipop) or later |
| Activity/Sport | - | Multisport |
| Wearing Style | Watch style | Watch style |
| Width | 43.8 mm | - |
| Height | 43.8 mm | - |
| Depth | 13.3 mm | - |
| Weight | 47 g | - |
| Body Details | - | With band: 59.4 g |
| Body Material | Fibre-reinforced polymer | Polycarbonate |
| Protection | Water-resistant | Water-resistant, temperature protection, salt fog protection, freezeproof |
| Colours | - | Desert grey |
| Clock Display | Yes | Yes |
| FEATURES | Garmin Forerunner 745 | Amazfit T-Rex Pro |
|---|
| Sensors | Accelerometer, digital compass, thermometre, gyro sensor, heart rate, barometric altimeter, Pulse Ox sensor | Ambient light sensor, 3-axis gyro sensor, geomagnetic sensor, barometric altimeter, 3-axis accelerometer, BioTracker 2 PPG biological tracking optical sensor |
|---|---|---|
| Tracking Data | Distance, time, calories burned, sleep activity, heart rate, steps taken, floors climbed, blood oxygen saturation, stress level, menstrual cycle, temperature, hydration, recovery time, training load | Distance, calories burned, sleep activity, heart rate, blood oxygen saturation |
| Goal Setting | Yes | Yes |
| Features | Find phone function, VO2 max, HR zones, VIRB control, Move IQ, Garmin Connect compatible, Find my Device, store & play music, rejecting a call, Garmin Elevate, LiveTrack, TrueUp, Body Battery, auto lap, Physio TrueUp, music playback control, weather information | Music remote handling, event reminders |
| Notifications | Calendar, SMS, Email, social apps, incoming calls | SMS, incoming calls, applications |
| Vibrating Alert | Yes | Yes |
| Feedback Type | Vibration alert, visual interface | - |
| Navigation (GPS) | GPS/GLONASS/Galileo receiver | GPS/GLONASS/Galileo/BeiDou receiver |
| Payment Technology | Garmin Pay | - |
| CONNECTIVITY | Garmin Forerunner 745 | Amazfit T-Rex Pro |
|---|
| Wireless Interface | Bluetooth, Wi-Fi, NFC, ANT+ | Bluetooth 5.0 |
|---|
| DISPLAY | Garmin Forerunner 745 | Amazfit T-Rex Pro |
|---|
| Type | Memory-in-Pixel LCD - colour - transflective | AMOLED - colour |
|---|---|---|
| Resolution | 240 x 240 pixels | 360 x 360 pixels |
| Screen Size | 1.2" | 1.3" |
| Screen Protection | Corning Gorilla Glass DX (scratch resistant glass) | Tempered glass |
| Always On Display (AOD) | - | Yes |
| INPUT DEVICE | Garmin Forerunner 745 | Amazfit T-Rex Pro |
|---|
| Type | Touch sensitive screen | Touch sensitive screen |
|---|
| CASE | Garmin Forerunner 745 | Amazfit T-Rex Pro |
|---|
| Case Shape | Round | Round |
|---|---|---|
| Bezel | Fibre-reinforced polymer | - |
| Case Details | Black | Neo tropic | Meteorite black | Steel blue |
| BAND | Garmin Forerunner 745 | Amazfit T-Rex Pro |
|---|
| Band Type | Band | Band |
|---|---|---|
| Band Width | 22 mm | 22 mm |
| Fits Wrist with Circumference | 126-216 mm | - |
| Changeable | Yes | - |
| Clasp Type | Buckle | Buckle |
| Band Material | Silicone | Silicone rubber |
| Band Colour | Black | Meteorite black | Blue steel |
| BATTERY | Garmin Forerunner 745 | Amazfit T-Rex Pro |
|---|
| Technology | Lithium Ion | Lithium polymer |
|---|---|---|
| Capacity | - | 390 mAh |
| Battery Life | 7 day(s) | 18 day(s) |
| Battery Life Details | Smartwatch mode - up to 7 days GPS mode - up to 16 hour(s) GPS with Music mode - up to 6 hour(s) UltraTrac mode - up to 21 hour(s) |
Typical usage - up to 18 days Heavy usage - up to 9 days GPS mode - up to 40 hour(s) |
| Rechargeable Battery | - | Yes |
| Recharge Time | - | 1.5 hour(s) |
| MISCELLANEOUS | Garmin Forerunner 745 | Amazfit T-Rex Pro |
|---|
| Included Accessories | USB cable | Magnetic charging dock |
|---|---|---|
| Preloaded Software | Garmin Pay, Garmion Connect IQ | - |
| Max Depth of Water Resistance | 50 m | 100 m |
| Max Operating Temperature | 60 °C | 70 °C |
| Min Operating Temperature | -20 °C | -40 °C |
| Warranty | 1-year warranty | 1-year warranty |
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