Polar M600 vs. Fitbit Flex 2 vs. Casio WSD-F20A vs. Michael Kors Grayson vs. Polar Loop vs. Michael Kors Grayson

 
M600
Flex 2
WSD-F20A
Grayson
Loop
Grayson
 PolarM600Remove Buy NowFitbitFlex 2Remove Buy NowCasioWSD-F20ARemove Buy NowMichael KorsGraysonRemove Buy NowPolarLoopRemove Buy NowMichael KorsGraysonRemove Buy Now

Basic Info

Suggested Price$330$100$399$350$100$350
Release201620162018201820132018

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration2 days5 days1 day24 hours5 days24 hours
Rechargeable

Compatibility

Android
iOS
Windows Phonen/an/aNA
MacNA
WindowsNA

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Colorn/a
Resolution240 x 240n/a320 x 320453 x 454NA453x454
Size1.3 inchesn/a1.32 inches1.39 inchesNA1.39 inches
Touchn/an/a
TypeTFTLEDLCDAMOLEDLEDAMOLED

Functions

Audio SpeakerAlerts only
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water ResistanceIPX85 ATM5 ATM1 ATM2 ATM1 ATM

Notifications

Phone
Emails
Texts

Software

Operating SystemAndroid Wearn/aWear OSAndroid WearNAAndroid Wear
Apps
Music

All Wearables