In depth comparison and review of Fitbit Ionic 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 | Fitbit Ionic | Amazfit T-Rex Pro |
|---|
| Product Type | Smart watch | Smart watch |
|---|---|---|
| Supported Host Device OS | iOS, Android, Windows Phone | iOS 10 or later, Android 5.0 (Lollipop) or later |
| Activity/Sport | - | Multisport |
| Wearing Style | Watch style | Watch style |
| Width | 38.6 mm | - |
| Height | 12.4 mm | - |
| Lenght | 256.5 mm | - |
| Depth | 12.4 mm | - |
| Weight | 50 g | - |
| Body Details | - | With band: 59.4 g |
| Body Material | Aerospace-grade aluminium | Polycarbonate |
| Protection | Water-resistant | Water-resistant, temperature protection, salt fog protection, freezeproof |
| Colours | Charcoal, smoke grey | Burnt orange, slate blue | Blue grey, silver grey | Desert grey |
| Clock Display | - | Yes |
| FEATURES | Fitbit Ionic | Amazfit T-Rex Pro |
|---|
| Sensors | Accelerometer, altimeter, 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, calories burned, activity, sleep activity, heart rate, steps taken, floors climbed, pace, sleep stages, swim laps, active time | Distance, calories burned, sleep activity, heart rate, blood oxygen saturation |
| Goal Setting | Yes | Yes |
| Features | PurePulse heart rate technology, automatic exercise recognition, SmartTrack | Music remote handling, event reminders |
| Notifications | Missed calls, calendar, SMS, social apps | SMS, incoming calls, applications |
| Vibrating Alert | Yes | Yes |
| Navigation (GPS) | - | GPS/GLONASS/Galileo/BeiDou receiver |
| CONNECTIVITY | Fitbit Ionic | Amazfit T-Rex Pro |
|---|
| Wireless Interface | Bluetooth, IEEE 802.11b/g/n, NFC | Bluetooth 5.0 |
|---|
| DISPLAY | Fitbit Ionic | Amazfit T-Rex Pro |
|---|
| Type | LCD - colour | AMOLED - colour |
|---|---|---|
| Resolution | - | 360 x 360 pixels |
| Screen Size | - | 1.3" |
| Screen Protection | Corning Gorilla Glass 3 (scratch resistant glass) | Tempered glass |
| Always On Display (AOD) | - | Yes |
| INPUT DEVICE | Fitbit Ionic | Amazfit T-Rex Pro |
|---|
| Type | Touch sensitive screen | Touch sensitive screen |
|---|
| CASE | Fitbit Ionic | Amazfit T-Rex Pro |
|---|
| Case Shape | - | Round |
|---|---|---|
| Case Details | Silver grey aluminium | Meteorite black | Steel blue |
| BAND | Fitbit Ionic | Amazfit T-Rex Pro |
|---|
| Band Type | Sport band | Band |
|---|---|---|
| Band Width | - | 22 mm |
| Clasp Type | - | Buckle |
| Band Material | - | Silicone rubber |
| Band Colour | Ink blue/ice grey | Meteorite black | Blue steel |
| BATTERY | Fitbit Ionic | Amazfit T-Rex Pro |
|---|
| Technology | - | Lithium polymer |
|---|---|---|
| Capacity | - | 390 mAh |
| Battery Life | 4 day(s) | 18 day(s) |
| Battery Life Details | - | 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 | Fitbit Ionic | Amazfit T-Rex Pro |
|---|
| Included Accessories | Charging cable, 2 wristbands (S+L) | 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 | 1-year warranty |
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