ASUS ZenWatch 2 vs. Asus VivoWatch vs. Garmin 645 Music vs. Fitbit Alta HR vs. Amazfit T-Rex

 
ZenWatch 2
VivoWatch
645 Music
Alta HR
T-Rex
 ASUSZenWatch 2Remove Buy NowAsusVivoWatchRemove Buy NowGarmin645 MusicRemove Buy NowFitbitAlta HRRemove Buy NowAmazfitT-RexRemove Buy Now

Basic Info

Suggested Price$150$160$450$150$140
Release20162018201820172019

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Durationn/a24 hours to 10 days7 days7 days20 days
Rechargeable

Compatibility

Android
iOS
Windows Phonen/aNA
Macn/aNA
Windowsn/aNA

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution320 x 320128 x 128240 x 240128 x 36360 x 360
Size1.63 inches or 1.45 inchNA1.2 inches1.4 inches1.3 inches
Touch
TypeAMOLEDNAMIPOLEDAMOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or AltimeterNA
Ultraviolet Sensor
Water ResistanceIP67IP675 ATM5 ATM

Notifications

Phone
Emailsn/a
Textsn/a

Software

Operating SystemAndroid WearKoodOSBuild-in
Apps
Music

All Wearables