Polar M600 vs. Garmin Vivosmart HR vs. Fitbit Ionic vs. Michael Kors Grayson vs. Garmin Vivofit 4 vs. Michael Kors Grayson

 
M600
Vivosmart HR
Ionic
Grayson
Vivofit 4
Grayson
 PolarM600Remove Buy NowGarminVivosmart HRRemove Buy NowFitbitIonicRemove Buy NowMichael KorsGraysonRemove Buy NowGarminVivofit 4Remove Buy NowMichael KorsGraysonRemove Buy Now

Basic Info

Suggested Price$330$170$299$350$79.95$350
Release201620152017201820182018

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration2 days5 days4+ days24 hours1 year24 hours
Rechargeable

Compatibility

Android
iOS
Windows Phonen/an/a
Macn/a
Windowsn/a

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution240 x 240160 x 68348x250453 x 45488 x 88453x454
Size1.3 inches1.08 inches1.421.39 inchesNA1.39 inches
Touchn/a
TypeTFTn/aOLEDAMOLEDNAAMOLED

Functions

Audio SpeakerAlerts only
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water ResistanceIPX85 ATM50m1 ATM5 ATM1 ATM

Notifications

Phone
Emails
Texts

Software

Operating SystemAndroid Wearn/aFitbit OSAndroid WearAndroid Wear
Apps
Music

All Wearables