Polar M600 vs. Fitbit Alta vs. Michael Kors Grayson vs. Fitbit Flex vs. Garmin Vivofit 4 vs. Michael Kors Grayson

 
M600
Alta
Grayson
Flex
Vivofit 4
Grayson
 PolarM600Remove Buy NowFitbitAltaRemove Buy NowMichael KorsGraysonRemove Buy NowFitbitFlexRemove Buy NowGarminVivofit 4Remove Buy NowMichael KorsGraysonRemove Buy Now

Basic Info

Suggested Price$330$130$350$100$79.95$350
Release201620162018201320182018

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration2 days5 days24 hours5 days1 year24 hours
Rechargeable

Compatibility

Android
iOS
Windows Phonen/aNA
Mac
Windows

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution240 x 240n/a453 x 454NA88 x 88453x454
Size1.3 inchesn/a1.39 inchesNANA1.39 inches
Touchn/an/aNA
TypeTFTOLEDAMOLEDLEDNAAMOLED

Functions

Audio SpeakerAlerts only
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water ResistanceIPX8n/a1 ATM1 ATM5 ATM1 ATM

Notifications

Phone
Emailsn/a
Texts

Software

Operating SystemAndroid Wearn/aAndroid WearNAAndroid Wear
Apps
Music

All Wearables