Polar M400 vs. Acer Liquid Leap vs. Garmin 645 Music vs. Skagen Falster 2 vs. Amazfit T-Rex

 
M400
Liquid Leap
645 Music
Falster 2
T-Rex
 PolarM400Remove Buy NowAcerLiquid LeapRemove Buy NowGarmin645 MusicRemove Buy NowSkagenFalster 2Remove Buy NowAmazfitT-RexRemove Buy Now

Basic Info

Suggested Price$200$90$450$199$140
Release20142015201820192019

Activity & Fitness

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

Battery

Duration8 hours to 30 days5 to 7 days7 days1 day20 days
Rechargeable

Compatibility

Android
iOS
Windows Phonen/a
Mac
Windows

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolutionn/a128 x 32240 x 240320 x 320360 x 360
Sizen/a1 inch1.2 inches1.19 inches1.3 inches
Touch
Typen/aOLEDMIPOLEDAMOLED

Functions

Audio SpeakerAlerts only
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance3 ATMIPX45 ATM3 ATM5 ATM

Notifications

Phone
Emails
Texts

Software

Operating Systemn/aWear OSBuild-in
Apps
Music

All Wearables