Michael Kors Grayson vs. Fitbit Charge 3 vs. Garmin Forerunner 45 vs. Michael Kors Grayson vs. Amazfit T-Rex vs. Garmin VivoActive 4

 
Grayson
Charge 3
Forerunner 45
Grayson
T-Rex
VivoActive 4
 Michael KorsGraysonRemove Buy NowFitbitCharge 3Remove Buy NowGarminForerunner 45Remove Buy NowMichael KorsGraysonRemove Buy NowAmazfitT-RexRemove Buy NowGarminVivoActive 4Remove Buy Now

Basic Info

Suggested Price$350$150$199$350$140$349
Release201820182019201820192019

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration24 hours7 days7 days24 hours20 days8 days
Rechargeable

Compatibility

Android
iOS
Windows Phone
Mac
WindowsNot yet

Connectivity

Bluetooth
Cellular
GPS
NFCNA
Wi-Fi

Display

Color
Resolution453 x 45466 x 18208 x 208453x454360 x 360260 x 260
Size1.39 inches.721 inches1.04 inches1.39 inches1.3 inches1.3ionches
Touch
TypeAMOLEDOLEDLCDAMOLEDAMOLEDMIP

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance1 ATM5 ATM5 ATM1 ATM5 ATM5 ATM

Notifications

Phone
Emails
Texts

Software

Operating SystemAndroid WearNABuilt-inAndroid WearBuild-inWear OS
Apps
Music

All Wearables