Garmin Vivofit 3 vs. Fitbit Alta HR vs. Polar A370 vs. Michael Kors Access Sofie HR vs. Amazfit T-Rex

 
Vivofit 3
Alta HR
A370
Access Sofie HR
T-Rex
 GarminVivofit 3Remove Buy NowFitbitAlta HRRemove Buy NowPolarA370Remove Buy NowMichael KorsAccess Sofie HRRemove Buy NowAmazfitT-RexRemove Buy Now

Basic Info

Suggested Price$100$150$179.95$395$140
Release20162017201720192019

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heartn/a
Oxygen
Sleep
Steps
Swim

Battery

Duration1 year7 daysUp to 3 days2 days20 days
Rechargeable

Compatibility

Android
iOS
Windows Phone
Macn/a
Windowsn/a

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution64 x 64128 x 36160 x 80390 x 390360 x 360
Size0.55 inches1.4 inches1.18 inches1.19 inches1.3 inches
Touch
Typen/aOLEDTFT LCDOMOLEDAMOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance5 ATMWR300.3 ATM5 ATM

Notifications

Phone
Emails
Texts

Software

Operating Systemn/aWear OSBuild-in
Apps
Music

All Wearables