Fitbit Flex 2 vs. Polar M430 vs. Garmin 645 Music vs. Garmin Forerunner 235 vs. Michael Kors Grayson vs. Michael Kors Grayson

 
Flex 2
M430
645 Music
Forerunner 235
Grayson
Grayson
 FitbitFlex 2Remove Buy NowPolarM430Remove Buy NowGarmin645 MusicRemove Buy NowGarminForerunner 235Remove Buy NowMichael KorsGraysonRemove Buy NowMichael KorsGraysonRemove Buy Now

Basic Info

Suggested Price$100$255$450$299.99$350$350
Release201620172018201720182018

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration5 days30 hours7 days9 days24 hours24 hours
Rechargeable

Compatibility

Android
iOS
Windows Phonen/a
Mac
Windows

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Colorn/a
Resolutionn/a128x128240 x 240215 x 180453 x 454453x454
Sizen/a1.4 inch1.2 inches1.23 inches1.39 inches1.39 inches
Touchn/a
TypeLEDLCDMIPMIPAMOLEDAMOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance5 ATMWR305 ATM5 ATM1 ATM1 ATM

Notifications

Phone
Emails
Texts

Software

Operating Systemn/aAndroid WearAndroid Wear
Apps
Music

All Wearables