Polar A360 vs. Amazfit Stratos vs. Michael Kors Grayson vs. Fitbit Charge 3 vs. Michael Kors Grayson vs. Amazfit GTR

 
A360
Stratos
Grayson
Charge 3
Grayson
GTR
 PolarA360Remove Buy NowAmazfitStratosRemove Buy NowMichael KorsGraysonRemove Buy NowFitbitCharge 3Remove Buy NowMichael KorsGraysonRemove Buy NowAmazfitGTRRemove Buy Now

Basic Info

Suggested Price$200$199$350$150$350$199
Release201520182018201820182019

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration12 days5 days24 hours7 days24 hours24 days
Rechargeable

Compatibility

Android
iOS
Windows Phonen/a
Mac
WindowsNot yet

Connectivity

Bluetooth
Cellular
GPS
NFCNA
Wi-Fi

Display

Color
Resolution160 x 80320 x 300453 x 45466 x 18453x454454 x 454
Size1.18 inches1.34 inches1.39 inches.721 inches1.39 inches1.39 inches
Touch
Typen/aOLEDAMOLEDOLEDAMOLEDAMOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water ResistanceWR305 ATM1 ATM5 ATM1 ATM5 ATM

Notifications

Phone
Emails
Texts

Software

Operating Systemn/aProprietaryAndroid WearNAAndroid WearBuild-in
Apps
Music

All Wearables