Polar M600 vs. Fitbit Flex 2 vs. Garmin Vivofit 4 vs. Polar Loop vs. Amazfit GTR

 
M600
Flex 2
Vivofit 4
Loop
GTR
 PolarM600Remove Buy NowFitbitFlex 2Remove Buy NowGarminVivofit 4Remove Buy NowPolarLoopRemove Buy NowAmazfitGTRRemove Buy Now

Basic Info

Suggested Price$330$100$79.95$100$199
Release20162016201820132019

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration2 days5 days1 year5 days24 days
Rechargeable

Compatibility

Android
iOS
Windows Phonen/an/aNA
MacNA
WindowsNA

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Colorn/a
Resolution240 x 240n/a88 x 88NA454 x 454
Size1.3 inchesn/aNANA1.39 inches
Touchn/an/a
TypeTFTLEDNALEDAMOLED

Functions

Audio SpeakerAlerts only
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water ResistanceIPX85 ATM5 ATM2 ATM5 ATM

Notifications

Phone
Emails
Texts

Software

Operating SystemAndroid Wearn/aNABuild-in
Apps
Music

All Wearables