ASUS ZenWatch 2 vs. ASUS ZenWatch 3 vs. Asus ZenWatch vs. Fitbit Charge HR vs. Amazfit T-Rex

 
ZenWatch 2
ZenWatch 3
ZenWatch
Charge HR
T-Rex
 ASUSZenWatch 2Remove Buy NowASUSZenWatch 3Remove Buy NowAsusZenWatchRemove Buy NowFitbitCharge HRRemove Buy NowAmazfitT-RexRemove Buy Now

Basic Info

Suggested Price$150$229$150$150$140
Release20162017201420152019

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Durationn/a48 hoursNA5 days20 days
Rechargeable

Compatibility

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

Connectivity

BluetoothYes
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution320 x 320400 x 400320 x 320NA360 x 360
Size1.63 inches or 1.45 inch1.39 inches1.63 inchesNA1.3 inches
TouchNA
TypeAMOLEDAMOLEDAMOLEDOLEDAMOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water ResistanceIP67IP551 ATM5 ATM

Notifications

Phone
Emailsn/aNA
Textsn/aNA

Software

Operating SystemAndroid WearAndroid Wear 2Android WearNABuild-in
Apps
Music

All Wearables