Garmin 645 Music vs. Michael Kors Grayson vs. Jawbone UP2 vs. Michael Kors Grayson vs. Amazfit T-Rex vs. Garmin VivoActive 4

 
645 Music
Grayson
UP2
Grayson
T-Rex
VivoActive 4
 Garmin645 MusicRemove Buy NowMichael KorsGraysonRemove Buy NowJawboneUP2Remove Buy NowMichael KorsGraysonRemove Buy NowAmazfitT-RexRemove Buy NowGarminVivoActive 4Remove Buy Now

Basic Info

Suggested Price$450$350$100$350$140$349
Release201820182015201820192019

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration7 days24 hours7 days24 hours20 days8 days
Rechargeable

Compatibility

Android
iOS
Windows PhoneNA
MacNA
WindowsNA

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution240 x 240453 x 454NA453x454360 x 360260 x 260
Size1.2 inches1.39 inchesNA1.39 inches1.3 inches1.3ionches
TouchNA
TypeMIPAMOLEDNAAMOLEDAMOLEDMIP

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance5 ATM1 ATMSplash resistant1 ATM5 ATM5 ATM

Notifications

Phone
Emails
Texts

Software

Operating SystemAndroid WearNAAndroid WearBuild-inWear OS
Apps
Music

All Wearables