ASUS ZenWatch 3 vs. Fitbit Ionic vs. Garmin Fenix 5x Plus vs. Polar A370 vs. Amazfit T-Rex

 
ZenWatch 3
Ionic
Fenix 5x Plus
A370
T-Rex
 ASUSZenWatch 3Remove Buy NowFitbitIonicRemove Buy NowGarminFenix 5x PlusRemove Buy NowPolarA370Remove Buy NowAmazfitT-RexRemove Buy Now

Basic Info

Suggested Price$229$299$850$179.95$140
Release20172017201820172019

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration48 hours4+ days20 daysUp to 3 days20 days
Rechargeable

Compatibility

Android
iOS
Windows Phone
Mac
Windows

Connectivity

BluetoothYes
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution400 x 400348x250240 x 240160 x 80360 x 360
Size1.39 inches1.421.2 inches1.18 inches1.3 inches
Touch
TypeAMOLEDOLEDMIPTFT LCDAMOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance50m10 ATMWR305 ATM

Notifications

Phone
Emails
Texts

Software

Operating SystemAndroid Wear 2Fitbit OSWear OSBuild-in
Apps
Music

All Wearables