ASUS ZenWatch 2 vs. Garmin Forerunner 225 vs. Polar M400 vs. Fitbit One vs. Amazfit T-Rex

 
ZenWatch 2
Forerunner 225
M400
One
T-Rex
 ASUSZenWatch 2Remove Buy NowGarminForerunner 225Remove Buy NowPolarM400Remove Buy NowFitbitOneRemove Buy NowAmazfitT-RexRemove Buy Now

Basic Info

Suggested Price$150$300$200$100$140
Release20162015201420122019

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heartn/a
Oxygen
Sleep
Steps
Swim

Battery

Durationn/a10 hours to 4 weeks8 hours to 30 days10-14 days20 days
Rechargeable

Compatibility

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

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution320 x 320180 x 180n/an/a360 x 360
Size1.63 inches or 1.45 inch1 inchn/an/a1.3 inches
Touch
TypeAMOLEDn/an/aOLEDAMOLED

Functions

Audio Speaker22Alerts only
Clock
Phonen/a
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water ResistanceIP675 ATM3 ATMSplast Resistant5 ATM

Notifications

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

Software

Operating SystemAndroid Wearn/an/an/aBuild-in
Appsn/a
Musicn/a

All Wearables