Garmin Vivosmart HR vs. Michael Kors Grayson vs. Fitbit Flex vs. Garmin Vivofit 4 vs. Polar A370 vs. Michael Kors Grayson

 
Vivosmart HR
Grayson
Flex
Vivofit 4
A370
Grayson
 GarminVivosmart HRRemove Buy NowMichael KorsGraysonRemove Buy NowFitbitFlexRemove Buy NowGarminVivofit 4Remove Buy NowPolarA370Remove Buy NowMichael KorsGraysonRemove Buy Now

Basic Info

Suggested Price$170$350$100$79.95$179.95$350
Release201520182013201820172018

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration5 days24 hours5 days1 yearUp to 3 days24 hours
Rechargeable

Compatibility

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

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution160 x 68453 x 454NA88 x 88160 x 80453x454
Size1.08 inches1.39 inchesNANA1.18 inches1.39 inches
TouchNA
Typen/aAMOLEDLEDNATFT LCDAMOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance5 ATM1 ATM1 ATM5 ATMWR301 ATM

Notifications

Phone
Emails
Texts

Software

Operating Systemn/aAndroid WearNAAndroid Wear
Apps
Music

All Wearables