Garmin Forerunner 225 vs. Polar M400 vs. Michael Kors Grayson vs. Fitbit Charge vs. Fitbit Flex vs. Michael Kors Grayson

 
Forerunner 225
M400
Grayson
Charge
Flex
Grayson
 GarminForerunner 225Remove Buy NowPolarM400Remove Buy NowMichael KorsGraysonRemove Buy NowFitbitChargeRemove Buy NowFitbitFlexRemove Buy NowMichael KorsGraysonRemove Buy Now

Basic Info

Suggested Price$300$200$350$130$100$350
Release201520142018201420132018

Activity & Fitness

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

Battery

Duration10 hours to 4 weeks8 hours to 30 days24 hours7-10 days5 days24 hours
Rechargeable

Compatibility

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

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution180 x 180n/a453 x 454NANA453x454
Size1 inchn/a1.39 inchesNANA1.39 inches
TouchNANA
Typen/an/aAMOLEDOLEDLEDAMOLED

Functions

Audio Speaker22Alerts only
Clock
Phonen/a
Vibration
Voice

Hardware

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

Notifications

Phonen/a
Emailsn/a
Textsn/a

Software

Operating Systemn/an/aAndroid WearNANAAndroid Wear
Appsn/a
Musicn/a

All Wearables