Michael Kors Grayson vs. Fitbit Alta HR vs. Garmin Vivofit 4 vs. Polar A370 vs. Michael Kors Grayson vs. Apple Watch 8

 
Grayson
Alta HR
Vivofit 4
A370
Grayson
Watch 8
 Michael KorsGraysonRemove Buy NowFitbitAlta HRRemove Buy NowGarminVivofit 4Remove Buy NowPolarA370Remove Buy NowMichael KorsGraysonRemove Buy NowAppleWatch 8Remove Buy Now

Basic Info

Suggested Price$350$150$79.95$179.95$350$499
Release201820172018201720182022

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration24 hours7 days1 yearUp to 3 days24 hours18 hrs
Rechargeable

Compatibility

Android
iOS
Windows Phone
Mac
Windows

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution453 x 454128 x 3688 x 88160 x 80453x454340 x 272 or 390 x 312
Size1.39 inches1.4 inchesNA1.18 inches1.39 inches1.5 inches or 1.65 inches
Touch
TypeAMOLEDOLEDNATFT LCDAMOLEDAMOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance1 ATM5 ATMWR301 ATM5 ATM

Notifications

Phone
Emails
Texts

Software

Operating SystemAndroid WearAndroid WearWatchOS 9
Apps
Music

All Wearables