Apple Watch Series 3 vs. Polar M400 vs. Polar Loop 2 vs. Michael Kors Grayson vs. Garmin Vivosmart HR Plus vs. Michael Kors Grayson

 
Watch Series 3
M400
Loop 2
Grayson
Vivosmart HR Plus
Grayson
 AppleWatch Series 3Remove Buy NowPolarM400Remove Buy NowPolarLoop 2Remove Buy NowMichael KorsGraysonRemove Buy NowGarminVivosmart HR PlusRemove Buy NowMichael KorsGraysonRemove Buy Now

Basic Info

Suggested Price$329$200$120$350$179$350
Release201720142015201820172018

Activity & Fitness

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

Battery

Duration18 hours8 hours to 30 days8 days (without notifications)24 hours5 days24 hours
Rechargeable

Compatibility

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

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution340 x 272 or 390 x 312n/an/a453 x 454160 x 68453x454
Size1.5 inches or 1.65 inchesn/an/a1.39 inches0.5 inches x 0.8 inches1.39 inches
Touch
TypeAMOLEDn/aLEDAMOLEDLCDAMOLED

Functions

Audio SpeakerAlerts only
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance5 ATM3 ATM2 ATM1 ATM5 ATM1 ATM

Notifications

Phone
Emails
Texts

Software

Operating SystemWatchOS 4n/an/aAndroid WearNAAndroid Wear
Apps
Music

All Wearables