Polar M600 vs. Fitbit Flex 2 vs. Amazfit Stratos vs. Michael Kors Grayson vs. Garmin Vivosmart 3 vs. Michael Kors Grayson

 
M600
Flex 2
Stratos
Grayson
Vivosmart 3
Grayson
 PolarM600Remove Buy NowFitbitFlex 2Remove Buy NowAmazfitStratosRemove Buy NowMichael KorsGraysonRemove Buy NowGarminVivosmart 3Remove Buy NowMichael KorsGraysonRemove Buy Now

Basic Info

Suggested Price$330$100$199$350$139.99$350
Release201620162018201820172018

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration2 days5 days5 days24 hours5 days24 hours
Rechargeable

Compatibility

Android
iOS
Windows Phonen/an/a
Mac
Windows

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Colorn/a
Resolution240 x 240n/a320 x 300453 x 45464 x 128453x454
Size1.3 inchesn/a1.34 inches1.39 inchesNA1.39 inches
Touchn/an/a
TypeTFTLEDOLEDAMOLEDOLEDAMOLED

Functions

Audio SpeakerAlerts only
Clock
Phone
Vibration
Voice

Hardware

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

Notifications

Phone
Emails
Texts

Software

Operating SystemAndroid Wearn/aProprietaryAndroid WearAndroid Wear
Apps
Music

All Wearables