Fitbit Ionic vs. Fitbit Versa vs. Garmin 645 Music vs. Fitbit Inspire HR vs. Amazfit T-Rex

 
Ionic
Versa
645 Music
Inspire HR
T-Rex
 FitbitIonicRemove Buy NowFitbitVersaRemove Buy NowGarmin645 MusicRemove Buy NowFitbitInspire HRRemove Buy NowAmazfitT-RexRemove Buy Now

Basic Info

Suggested Price$299$199.99$450$99$140
Release20172018201820192019

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration4+ days4 days7 days5 days20 days
Rechargeable

Compatibility

Android
iOS
Windows Phone
Mac
Windows

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution348x250300 x300240 x 240139 x 60360 x 360
Size1.421.34 inches1.2 inches1.4 inches1.3 inches
Touch
TypeOLEDOLEDMIPOLEDAMOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance50m5 ATM5 ATM5 ATM5 ATM

Notifications

Phone
Emails
Texts

Software

Operating SystemFitbit OSFitbit OSBuild-in
Apps
Music

All Wearables