ASUS ZenWatch 2 vs. Garmin Forerunner 225 vs. Fitbit Charge 2 vs. Fitbit Ionic vs. Amazfit GTR

 
ZenWatch 2
Forerunner 225
Charge 2
Ionic
GTR
 ASUSZenWatch 2Remove Buy NowGarminForerunner 225Remove Buy NowFitbitCharge 2Remove Buy NowFitbitIonicRemove Buy NowAmazfitGTRRemove Buy Now

Basic Info

Suggested Price$150$300$150$299$199
Release20162015201620172019

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Durationn/a10 hours to 4 weeks5 days4+ days24 days
Rechargeable

Compatibility

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

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution320 x 320180 x 180n/a348x250454 x 454
Size1.63 inches or 1.45 inch1 inchn/a1.421.39 inches
Touchn/a
TypeAMOLEDn/aOLEDOLEDAMOLED

Functions

Audio Speaker22
Clock
Phonen/a
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water ResistanceIP675 ATMn/a50m5 ATM

Notifications

Phonen/a
Emailsn/an/a
Textsn/an/a

Software

Operating SystemAndroid Wearn/an/aFitbit OSBuild-in
Appsn/a
Musicn/a

All Wearables