Garmin Forerunner 225 vs. Fitbit Alta vs. Asus ZenWatch vs. Amazfit GTR vs. Amazfit T-Rex

 
Forerunner 225
Alta
ZenWatch
GTR
T-Rex
 GarminForerunner 225Remove Buy NowFitbitAltaRemove Buy NowAsusZenWatchRemove Buy NowAmazfitGTRRemove Buy NowAmazfitT-RexRemove Buy Now

Basic Info

Suggested Price$300$130$150$199$140
Release20152016201420192019

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration10 hours to 4 weeks5 daysNA24 days20 days
Rechargeable

Compatibility

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

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution180 x 180n/a320 x 320454 x 454360 x 360
Size1 inchn/a1.63 inches1.39 inches1.3 inches
Touchn/a
Typen/aOLEDAMOLEDAMOLEDAMOLED

Functions

Audio Speaker22
Clock
Phonen/a
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance5 ATMn/aIP555 ATM5 ATM

Notifications

Phonen/a
Emailsn/an/aNA
Textsn/aNA

Software

Operating Systemn/an/aAndroid WearBuild-inBuild-in
Appsn/a
Musicn/a

All Wearables