Motorola Moto 360 (2nd Gen) vs. Polar M400 vs. Polar Loop 2 vs. Apple Watch vs. Amazfit T-Rex

 
Moto 360 (2nd Gen)
M400
Loop 2
Watch
T-Rex
 MotorolaMoto 360 (2nd Gen)Remove Buy NowPolarM400Remove Buy NowPolarLoop 2Remove Buy NowAppleWatchRemove Buy NowAmazfitT-RexRemove Buy Now

Basic Info

Suggested Price$300$200$120$349$140
Release20152014201520152019

Activity & Fitness

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

Battery

Duration1.5 days8 hours to 30 days8 days (without notifications)18 hours20 days
Rechargeable

Compatibility

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

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution360 x 325 or 360 x 330n/an/a340 x 272 or 390 x 312360 x 360
Size1.37 inches or 1.56 inchesn/an/a1.5 inches or 1.65 inches1.3 inches
Touch
TypeLCDn/aLEDAMOLEDAMOLED

Functions

Audio SpeakerBluetoothAlerts only
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water ResistanceIP673 ATM2 ATMIPX75 ATM

Notifications

Phone
Emails
Texts

Software

Operating SystemAndroid Wearn/an/aWatch OSBuild-in
Apps
Musicn/a

All Wearables