ASUS ZenWatch 2 vs. Garmin Forerunner 225 vs. Fitbit Charge vs. Garmin Vivosmart 3 vs. Amazfit T-Rex

 
ZenWatch 2
Forerunner 225
Charge
Vivosmart 3
T-Rex
 ASUSZenWatch 2Remove Buy NowGarminForerunner 225Remove Buy NowFitbitChargeRemove Buy NowGarminVivosmart 3Remove Buy NowAmazfitT-RexRemove Buy Now

Basic Info

Suggested Price$150$300$130$139.99$140
Release20162015201420172019

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Durationn/a10 hours to 4 weeks7-10 days5 days20 days
Rechargeable

Compatibility

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

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution320 x 320180 x 180NA64 x 128360 x 360
Size1.63 inches or 1.45 inch1 inchNANA1.3 inches
TouchNA
TypeAMOLEDn/aOLEDOLEDAMOLED

Functions

Audio Speaker22
Clock
Phonen/a
Vibration
Voice

Hardware

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

Notifications

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

Software

Operating SystemAndroid Wearn/aNABuild-in
Appsn/a
Musicn/a

All Wearables