Michael Kors Grayson vs. Jawbone UP3 vs. Polar Loop vs. Garmin Forerunner 45 vs. Michael Kors Grayson vs. Amazfit T-Rex

 
Grayson
UP3
Loop
Forerunner 45
Grayson
T-Rex
 Michael KorsGraysonRemove Buy NowJawboneUP3Remove Buy NowPolarLoopRemove Buy NowGarminForerunner 45Remove Buy NowMichael KorsGraysonRemove Buy NowAmazfitT-RexRemove Buy Now

Basic Info

Suggested Price$350$180$100$199$350$140
Release201820132013201920182019

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration24 hours7 days5 days7 days24 hours20 days
Rechargeable

Compatibility

Android
iOS
Windows PhoneNANA
MacNANA
WindowsNANA

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution453 x 454NANA208 x 208453x454360 x 360
Size1.39 inchesNANA1.04 inches1.39 inches1.3 inches
TouchNA
TypeAMOLEDNALEDLCDAMOLEDAMOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance1 ATMNA2 ATM5 ATM1 ATM5 ATM

Notifications

Phone
Emails
Texts

Software

Operating SystemAndroid WearNANABuilt-inAndroid WearBuild-in
Apps
MusicNA

All Wearables