Polar M400 vs. Motorola Moto 360 (1st Gen) vs. Polar A370 vs. Amazfit T-Rex vs. Skagen Falster 3

 
M400
Moto 360 (1st Gen)
A370
T-Rex
Falster 3
 PolarM400Remove Buy NowMotorolaMoto 360 (1st Gen)Remove Buy NowPolarA370Remove Buy NowAmazfitT-RexRemove Buy NowSkagenFalster 3Remove Buy Now

Basic Info

Suggested Price$200$150$179.95$140$295
Release20142014201720192020

Activity & Fitness

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

Battery

Duration8 hours to 30 days1 dayUp to 3 days20 days1 day
Rechargeable

Compatibility

Android
iOS
Windows Phonen/aNA
MacNA
WindowsNA

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolutionn/a320 x 260160 x 80360 x 360416 x 416
Sizen/a1.56 inches1.18 inches1.3 inches1.28 inches
Touch
Typen/aLCDTFT LCDAMOLEDOLED

Functions

Audio SpeakerAlerts only
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance3 ATMIP67WR305 ATM3 ATM

Notifications

Phone
Emails
Texts

Software

Operating Systemn/aAndroid WearBuild-inWear OS
Apps
MusicNA

All Wearables