ASUS ZenWatch 2 vs. ASUS ZenWatch 3 vs. Fitbit Charge HR vs. Fitbit Flex vs. Amazfit GTR

 
ZenWatch 2
ZenWatch 3
Charge HR
Flex
GTR
 ASUSZenWatch 2Remove Buy NowASUSZenWatch 3Remove Buy NowFitbitCharge HRRemove Buy NowFitbitFlexRemove Buy NowAmazfitGTRRemove Buy Now

Basic Info

Suggested Price$150$229$150$100$199
Release20162017201520132019

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Durationn/a48 hours5 days5 days24 days
Rechargeable

Compatibility

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

Connectivity

BluetoothYes
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution320 x 320400 x 400NANA454 x 454
Size1.63 inches or 1.45 inch1.39 inchesNANA1.39 inches
TouchNANA
TypeAMOLEDAMOLEDOLEDLEDAMOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water ResistanceIP671 ATM1 ATM5 ATM

Notifications

Phone
Emailsn/a
Textsn/a

Software

Operating SystemAndroid WearAndroid Wear 2NANABuild-in
Apps
Music

All Wearables