ASUS ZenWatch 2 vs. Fitbit Ionic vs. Garmin Forerunner 235 vs. Fitbit Flex vs. Amazfit T-Rex

 
ZenWatch 2
Ionic
Forerunner 235
Flex
T-Rex
 ASUSZenWatch 2Remove Buy NowFitbitIonicRemove Buy NowGarminForerunner 235Remove Buy NowFitbitFlexRemove Buy NowAmazfitT-RexRemove Buy Now

Basic Info

Suggested Price$150$299$299.99$100$140
Release20162017201720132019

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Durationn/a4+ days9 days5 days20 days
Rechargeable

Compatibility

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

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution320 x 320348x250215 x 180NA360 x 360
Size1.63 inches or 1.45 inch1.421.23 inchesNA1.3 inches
TouchNA
TypeAMOLEDOLEDMIPLEDAMOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water ResistanceIP6750m5 ATM1 ATM5 ATM

Notifications

Phone
Emailsn/a
Textsn/a

Software

Operating SystemAndroid WearFitbit OSNABuild-in
Apps
Music

All Wearables