Polar M600 vs. Fitbit Flex 2 vs. Garmin 645 Music vs. Garmin Vivosmart 3 vs. Michael Kors Access Sofie HR

 
M600
Flex 2
645 Music
Vivosmart 3
Access Sofie HR
 PolarM600Remove Buy NowFitbitFlex 2Remove Buy NowGarmin645 MusicRemove Buy NowGarminVivosmart 3Remove Buy NowMichael KorsAccess Sofie HRRemove Buy Now

Basic Info

Suggested Price$330$100$450$139.99$395
Release20162016201820172019

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration2 days5 days7 days5 days2 days
Rechargeable

Compatibility

Android
iOS
Windows Phonen/an/a
Mac
Windows

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Colorn/a
Resolution240 x 240n/a240 x 24064 x 128390 x 390
Size1.3 inchesn/a1.2 inchesNA1.19 inches
Touchn/an/a
TypeTFTLEDMIPOLEDOMOLED

Functions

Audio SpeakerAlerts only
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water ResistanceIPX85 ATM5 ATM5 ATM0.3 ATM

Notifications

Phone
Emails
Texts

Software

Operating SystemAndroid Wearn/aWear OS
Apps
Music

All Wearables