Fitbit Blaze vs. Polar M400 vs. Polar Loop 2 vs. Amazfit Cor vs. Michael Kors Grayson vs. Michael Kors Grayson

 
Blaze
M400
Loop 2
Cor
Grayson
Grayson
 FitbitBlazeRemove Buy NowPolarM400Remove Buy NowPolarLoop 2Remove Buy NowAmazfitCorRemove Buy NowMichael KorsGraysonRemove Buy NowMichael KorsGraysonRemove Buy Now

Basic Info

Suggested Price$200$200$120$79.99$350$350
Release201620142015201820182018

Activity & Fitness

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

Battery

Duration5 Days8 hours to 30 days8 days (without notifications)12 days24 hours24 hours
Rechargeable

Compatibility

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

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolutionn/an/an/a80 x 160453 x 454453x454
Sizen/an/an/a1.23 inches1.39 inches1.39 inches
Touch
TypeLCDn/aLEDIPS LCDAMOLEDAMOLED

Functions

Audio SpeakerAlerts only
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistancen/a3 ATM2 ATM5 ATM1 ATM1 ATM

Notifications

Phone
Emails
Texts

Software

Operating Systemn/an/an/aAndroid WearAndroid Wear
Apps
Music

All Wearables