Garmin Vivoactive HR vs. Garmin 645 Music vs. Michael Kors Grayson vs. Diesel On Full Guard 2.5 vs. Michael Kors Grayson vs. Amazfit T-Rex

 
Vivoactive HR
645 Music
Grayson
On Full Guard 2.5
Grayson
T-Rex
 GarminVivoactive HRRemove Buy NowGarmin645 MusicRemove Buy NowMichael KorsGraysonRemove Buy NowDieselOn Full Guard 2.5Remove Buy NowMichael KorsGraysonRemove Buy NowAmazfitT-RexRemove Buy Now

Basic Info

Suggested Price$250$450$350$325$350$140
Release201620182018201820182019

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration13 hours to 8 days7 days24 hours4 days24 hours20 days
Rechargeable

Compatibility

Android
iOS
Windows Phone
Macn/a
Windowsn/a

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution148 x 205240 x 240453 x 454454x454453x454360 x 360
Size1.38 inches1.2 inches1.39 inches1.39 inches1.39 inches1.3 inches
Touch
Typen/aMIPAMOLEDAMOLEDAMOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance5 ATM5 ATM1 ATM3 ATM1 ATM5 ATM

Notifications

Phone
Emails
Texts

Software

Operating Systemn/aAndroid WearWear OSAndroid WearBuild-in
Apps
Music

All Wearables