Michael Kors Grayson vs. Fitbit Charge vs. Jawbone UP3 vs. Michael Kors Grayson vs. Garmin Vivosmart 4 vs. Amazfit T-Rex

 
Grayson
Charge
UP3
Grayson
Vivosmart 4
T-Rex
 Michael KorsGraysonRemove Buy NowFitbitChargeRemove Buy NowJawboneUP3Remove Buy NowMichael KorsGraysonRemove Buy NowGarminVivosmart 4Remove Buy NowAmazfitT-RexRemove Buy Now

Basic Info

Suggested Price$350$130$180$350$130$140
Release201820142013201820182019

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration24 hours7-10 days7 days24 hours7 days20 days
Rechargeable

Compatibility

Android
iOS
Windows PhoneNANA
MacNA
WindowsNA

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution453 x 454NANA453x45448 x 128360 x 360
Size1.39 inchesNANA1.39 inches0.74 inches1.3 inches
TouchNANA
TypeAMOLEDOLEDNAAMOLEDOLEDAMOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance1 ATM1 ATMNA1 ATM5 ATM5 ATM

Notifications

Phone
Emails
Texts

Software

Operating SystemAndroid WearNANAAndroid WearBuild-in
Apps
MusicNA

All Wearables