ASUS ZenWatch 2 vs. Casio WSD-F20A vs. Fitbit Flex vs. Garmin Vivofit 4 vs. Amazfit T-Rex

 
ZenWatch 2
WSD-F20A
Flex
Vivofit 4
T-Rex
 ASUSZenWatch 2Remove Buy NowCasioWSD-F20ARemove Buy NowFitbitFlexRemove Buy NowGarminVivofit 4Remove Buy NowAmazfitT-RexRemove Buy Now

Basic Info

Suggested Price$150$399$100$79.95$140
Release20162018201320182019

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Durationn/a1 day5 days1 year20 days
Rechargeable

Compatibility

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

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution320 x 320320 x 320NA88 x 88360 x 360
Size1.63 inches or 1.45 inch1.32 inchesNANA1.3 inches
TouchNA
TypeAMOLEDLCDLEDNAAMOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water ResistanceIP675 ATM1 ATM5 ATM5 ATM

Notifications

Phone
Emailsn/a
Textsn/a

Software

Operating SystemAndroid WearWear OSNABuild-in
Apps
Music

All Wearables