Garmin Vivosmart HR vs. Fitbit Ionic vs. Garmin 645 Music vs. Polar Loop vs. Amazfit T-Rex

 
Vivosmart HR
Ionic
645 Music
Loop
T-Rex
 GarminVivosmart HRRemove Buy NowFitbitIonicRemove Buy NowGarmin645 MusicRemove Buy NowPolarLoopRemove Buy NowAmazfitT-RexRemove Buy Now

Basic Info

Suggested Price$170$299$450$100$140
Release20152017201820132019

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration5 days4+ days7 days5 days20 days
Rechargeable

Compatibility

Android
iOS
Windows Phonen/aNA
Macn/aNA
Windowsn/aNA

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution160 x 68348x250240 x 240NA360 x 360
Size1.08 inches1.421.2 inchesNA1.3 inches
Touch
Typen/aOLEDMIPLEDAMOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance5 ATM50m5 ATM2 ATM5 ATM

Notifications

Phone
Emails
Texts

Software

Operating Systemn/aFitbit OSNABuild-in
Apps
Music

All Wearables