Polar M400 vs. Polar V800 vs. Asus ZenWatch vs. Samsung Galaxy Watch vs. Amazfit T-Rex

 
M400
V800
ZenWatch
Galaxy Watch
T-Rex
 PolarM400Remove Buy NowPolarV800Remove Buy NowAsusZenWatchRemove Buy NowSamsungGalaxy WatchRemove Buy NowAmazfitT-RexRemove Buy Now

Basic Info

Suggested Price$200$470$150$330$140
Release20142014201420182019

Activity & Fitness

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

Battery

Duration8 hours to 30 days13 hours to 30 daysNA7 days20 days
Rechargeable

Compatibility

Android
iOS
Windows Phonen/an/aNA
MacNA
WindowsNA

Connectivity

Bluetooth
CellularNA
GPS
NFC
Wi-Fi

Display

Color
Resolutionn/an/a320 x 320360 x 360360 x 360
Sizen/an/a1.63 inches1.2 inches or 1.3 inches1.3 inches
Touch
Typen/an/aAMOLEDAMOLEDAMOLED

Functions

Audio SpeakerAlerts onlyAlerts only
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance3 ATM3 ATMIP555 ATM5 ATM

Notifications

Phone
EmailsNA
TextsNA

Software

Operating Systemn/an/aAndroid WearTizen OSBuild-in
Apps
MusicSpotify

All Wearables