Polar M600 vs. Fitbit Charge 2 vs. Huawei Talkband B2 vs. Michael Kors Grayson vs. Garmin Vivofit 4 vs. Michael Kors Grayson

 
M600
Charge 2
Talkband B2
Grayson
Vivofit 4
Grayson
 PolarM600Remove Buy NowFitbitCharge 2Remove Buy NowHuaweiTalkband B2Remove Buy NowMichael KorsGraysonRemove Buy NowGarminVivofit 4Remove Buy NowMichael KorsGraysonRemove Buy Now

Basic Info

Suggested Price$330$150$180$350$79.95$350
Release201620162015201820182018

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration2 days5 days3 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 240n/a128 x 88453 x 45488 x 88453x454
Size1.3 inchesn/a0.73 inches1.39 inchesNA1.39 inches
Touchn/an/a
TypeTFTOLEDPMOLEDAMOLEDNAAMOLED

Functions

Audio SpeakerAlerts onlyBluetooth
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water ResistanceIPX8n/aIP571 ATM5 ATM1 ATM

Notifications

Phone
Emails
Texts

Software

Operating SystemAndroid Wearn/an/aAndroid WearAndroid Wear
Apps
Music

All Wearables