Polar M600 vs. Fitbit Charge 2 vs. Garmin 645 Music vs. Michael Kors Grayson vs. Garmin Vivosmart HR Plus vs. Michael Kors Grayson

 
M600
Charge 2
645 Music
Grayson
Vivosmart HR Plus
Grayson
 PolarM600Remove Buy NowFitbitCharge 2Remove Buy NowGarmin645 MusicRemove Buy NowMichael KorsGraysonRemove Buy NowGarminVivosmart HR PlusRemove Buy NowMichael KorsGraysonRemove Buy Now

Basic Info

Suggested Price$330$150$450$350$179$350
Release201620162018201820172018

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration2 days5 days7 days24 hours5 days24 hours
Rechargeable

Compatibility

Android
iOS
Windows Phonen/a
Mac
Windows

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution240 x 240n/a240 x 240453 x 454160 x 68453x454
Size1.3 inchesn/a1.2 inches1.39 inches0.5 inches x 0.8 inches1.39 inches
Touchn/an/a
TypeTFTOLEDMIPAMOLEDLCDAMOLED

Functions

Audio SpeakerAlerts only
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water ResistanceIPX8n/a5 ATM1 ATM5 ATM1 ATM

Notifications

Phone
Emails
Texts

Software

Operating SystemAndroid Wearn/aAndroid WearNAAndroid Wear
Apps
Music

All Wearables