Polar M600 vs. Michael Kors Grayson vs. Fitbit Flex vs. Garmin Vivosport vs. Michael Kors Grayson vs. Garmin Vivosmart 4

 
M600
Grayson
Flex
Vivosport
Grayson
Vivosmart 4
 PolarM600Remove Buy NowMichael KorsGraysonRemove Buy NowFitbitFlexRemove Buy NowGarminVivosportRemove Buy NowMichael KorsGraysonRemove Buy NowGarminVivosmart 4Remove Buy Now

Basic Info

Suggested Price$330$350$100$199$350$130
Release201620182013201720182018

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration2 days24 hours5 days7 days24 hours7 days
Rechargeable

Compatibility

Android
iOS
Windows Phonen/aNA
Mac
Windows

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution240 x 240453 x 454NA72 x 144453x45448 x 128
Size1.3 inches1.39 inchesNANA1.39 inches0.74 inches
Touchn/aNA
TypeTFTAMOLEDLEDMIPAMOLEDOLED

Functions

Audio SpeakerAlerts only
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water ResistanceIPX81 ATM1 ATM5 ATM1 ATM5 ATM

Notifications

Phone
Emails
Texts

Software

Operating SystemAndroid WearAndroid WearNAAndroid Wear
Apps
Music

All Wearables