Polar M400 vs. Polar M600 vs. Amazfit Pace vs. Garmin 645 Music vs. Michael Kors Grayson vs. Michael Kors Grayson

 
M400
M600
Pace
645 Music
Grayson
Grayson
 PolarM400Remove Buy NowPolarM600Remove Buy NowAmazfitPaceRemove Buy NowGarmin645 MusicRemove Buy NowMichael KorsGraysonRemove Buy NowMichael KorsGraysonRemove Buy Now

Basic Info

Suggested Price$200$330$130$450$350$350
Release201420162017201820182018

Activity & Fitness

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

Battery

Duration8 hours to 30 days2 days5 days7 days24 hours24 hours
Rechargeable

Compatibility

Android
iOS
Windows Phonen/an/a
Mac
Windows

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolutionn/a240 x 240320 x 300240 x 240453 x 454453x454
Sizen/a1.3 inches1.34 inches1.2 inches1.39 inches1.39 inches
Touchn/a
Typen/aTFTTFT LCDMIPAMOLEDAMOLED

Functions

Audio SpeakerAlerts onlyAlerts only
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance3 ATMIPX8IP675 ATM1 ATM1 ATM

Notifications

Phone
Emails
Texts

Software

Operating Systemn/aAndroid WearProprietaryAndroid WearAndroid Wear
Apps
Music

All Wearables