ASUS ZenWatch 2 vs. ASUS ZenWatch 3 vs. Fitbit Alta HR vs. Fitbit Inspire HR vs. Amazfit T-Rex

 
ZenWatch 2
ZenWatch 3
Alta HR
Inspire HR
T-Rex
 ASUSZenWatch 2Remove Buy NowASUSZenWatch 3Remove Buy NowFitbitAlta HRRemove Buy NowFitbitInspire HRRemove Buy NowAmazfitT-RexRemove Buy Now

Basic Info

Suggested Price$150$229$150$99$140
Release20162017201720192019

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Durationn/a48 hours7 days5 days20 days
Rechargeable

Compatibility

Android
iOS
Windows Phonen/a
Macn/a
Windowsn/a

Connectivity

BluetoothYes
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution320 x 320400 x 400128 x 36139 x 60360 x 360
Size1.63 inches or 1.45 inch1.39 inches1.4 inches1.4 inches1.3 inches
Touch
TypeAMOLEDAMOLEDOLEDOLEDAMOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water ResistanceIP675 ATM5 ATM

Notifications

Phone
Emailsn/a
Textsn/a

Software

Operating SystemAndroid WearAndroid Wear 2Fitbit OSBuild-in
Apps
Music

All Wearables