Polar Loop 2 vs. ASUS ZenWatch 3 vs. Apple Watch vs. Casio G-Shock GBA800 vs. Amazfit T-Rex

 
Loop 2
ZenWatch 3
Watch
G-Shock GBA800
T-Rex
 PolarLoop 2Remove Buy NowASUSZenWatch 3Remove Buy NowAppleWatchRemove Buy NowCasioG-Shock GBA800Remove Buy NowAmazfitT-RexRemove Buy Now

Basic Info

Suggested Price$120$229$349$120$140
Release20152017201520182019

Activity & Fitness

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

Battery

Duration8 days (without notifications)48 hours18 hours2 years20 days
Rechargeable

Compatibility

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

Connectivity

BluetoothYes
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolutionn/a400 x 400340 x 272 or 390 x 312360 x 360
Sizen/a1.39 inches1.5 inches or 1.65 inches1.3 inches
Touch
TypeLEDAMOLEDAMOLEDAMOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance2 ATMIPX720 ATM5 ATM

Notifications

Phone
Emails
Texts

Software

Operating Systemn/aAndroid Wear 2Watch OSBuild-in
Apps
Music

All Wearables