ASUS ZenWatch 2 vs. Garmin 645 Music vs. Garmin Forerunner 235 vs. Fitbit Charge HR vs. Amazfit GTR

 
ZenWatch 2
645 Music
Forerunner 235
Charge HR
GTR
 ASUSZenWatch 2Remove Buy NowGarmin645 MusicRemove Buy NowGarminForerunner 235Remove Buy NowFitbitCharge HRRemove Buy NowAmazfitGTRRemove Buy Now

Basic Info

Suggested Price$150$450$299.99$150$199
Release20162018201720152019

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Durationn/a7 days9 days5 days24 days
Rechargeable

Compatibility

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

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution320 x 320240 x 240215 x 180NA454 x 454
Size1.63 inches or 1.45 inch1.2 inches1.23 inchesNA1.39 inches
TouchNA
TypeAMOLEDMIPMIPOLEDAMOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

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

Notifications

Phone
Emailsn/a
Textsn/a

Software

Operating SystemAndroid WearNABuild-in
Apps
Music

All Wearables