ASUS ZenWatch 3 vs. Casio WSD-F20A vs. Fitbit Charge HR vs. Fitbit Flex vs. Amazfit GTR

 
ZenWatch 3
WSD-F20A
Charge HR
Flex
GTR
 ASUSZenWatch 3Remove Buy NowCasioWSD-F20ARemove Buy NowFitbitCharge HRRemove Buy NowFitbitFlexRemove Buy NowAmazfitGTRRemove Buy Now

Basic Info

Suggested Price$229$399$150$100$199
Release20172018201520132019

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration48 hours1 day5 days5 days24 days
Rechargeable

Compatibility

Android
iOS
Windows PhoneNANA
Mac
Windows

Connectivity

BluetoothYes
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution400 x 400320 x 320NANA454 x 454
Size1.39 inches1.32 inchesNANA1.39 inches
TouchNANA
TypeAMOLEDLCDOLEDLEDAMOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

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

Notifications

Phone
Emails
Texts

Software

Operating SystemAndroid Wear 2Wear OSNANABuild-in
Apps
Music

All Wearables