In depth comparison and review of Garmin Forerunner 45S 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 45S | 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 | 39.5 mm | - |
| Height | 39.5 mm | - |
| Depth | 11.4 mm | - |
| Weight | 32 g | - |
| Body Details | - | With band: 59.4 g |
| Body Material | - | Polycarbonate |
| Protection | Waterproof | Water-resistant, temperature protection, salt fog protection, freezeproof |
| Colours | - | Desert grey |
| Clock Display | Yes | Yes |
| FEATURES | Garmin Forerunner 45S | Amazfit T-Rex Pro |
|---|
| Sensors | Accelerometer, heart rate | 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, speed, calories burned, sleep activity, heart rate, stress level | Distance, calories burned, sleep activity, heart rate, blood oxygen saturation |
| Goal Setting | Yes | Yes |
| Features | Music remote handling, find phone function, HR zones, Move IQ, Garmin Connect compatible, Find my Device | Music remote handling, event reminders |
| Notifications | Calendar, Email, social apps | SMS, incoming calls, applications |
| Vibrating Alert | Yes | Yes |
| Navigation (GPS) | - | GPS/GLONASS/Galileo/BeiDou receiver |
| CONNECTIVITY | Garmin Forerunner 45S | Amazfit T-Rex Pro |
|---|
| Wireless Interface | Bluetooth, ANT+ | Bluetooth 5.0 |
|---|
| DISPLAY | Garmin Forerunner 45S | Amazfit T-Rex Pro |
|---|
| Type | Memory-in-Pixel LCD - colour - transflective | AMOLED - colour |
|---|---|---|
| Resolution | 208 x 208 pixels | 360 x 360 pixels |
| Screen Size | 1.04" | 1.3" |
| Screen Protection | - | Tempered glass |
| Always On Display (AOD) | - | Yes |
| INPUT DEVICE | Garmin Forerunner 45S | Amazfit T-Rex Pro |
|---|
| Type | - | Touch sensitive screen |
|---|
| CASE | Garmin Forerunner 45S | Amazfit T-Rex Pro |
|---|
| Case Shape | Round | Round |
|---|---|---|
| Case Details | White | Iris | Black | Meteorite black | Steel blue |
| BAND | Garmin Forerunner 45S | Amazfit T-Rex Pro |
|---|
| Band Type | Band | Band |
|---|---|---|
| Band Size | S | - |
| Band Width | - | 22 mm |
| Fits Wrist with Circumference | 124-185 mm | - |
| Changeable | Yes | - |
| Clasp Type | Buckle | Buckle |
| Band Material | Silicone | Silicone rubber |
| Band Colour | White | Iris | Black | Meteorite black | Blue steel |
| BATTERY | Garmin Forerunner 45S | Amazfit T-Rex Pro |
|---|
| Technology | - | Lithium polymer |
|---|---|---|
| Capacity | - | 390 mAh |
| Battery Life | - | 18 day(s) |
| Battery Life Details | GPS mode - up to 13 hour(s) Smartwatch mode - up to 7 days |
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 45S | Amazfit T-Rex Pro |
|---|
| Included Accessories | Charging/data cable | Magnetic charging dock |
|---|---|---|
| Max Depth of Water Resistance | 50 m | 100 m |
| Max Operating Temperature | - | 70 °C |
| Min Operating Temperature | - | -40 °C |
| Warranty | - | 1-year warranty |
cs
sk
de
it
es
fr
hu
pt
ru
pl
br
ro
