Fitbit Flex 2 vs. Michael Kors Grayson vs. Fitbit Flex vs. Pebble Core vs. Polar A370 vs. Michael Kors Grayson

 
Flex 2
Grayson
Flex
Core
A370
Grayson
 FitbitFlex 2Remove Buy NowMichael KorsGraysonRemove Buy NowFitbitFlexRemove Buy NowPebbleCoreRemove Buy NowPolarA370Remove Buy NowMichael KorsGraysonRemove Buy Now

Basic Info

Suggested Price$100$350$100$99$179.95$350
Release201620182013201620172018

Activity & Fitness

Calories
Cycling (Bicycling)NA
Distance
Heart
Oxygen
SleepNA
Steps
Swim

Battery

Duration5 days24 hours5 daysNAUp to 3 days24 hours
Rechargeable

Compatibility

Android
iOSNA
Windows Phonen/aNANA
MacNA
WindowsNA

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Colorn/a
Resolutionn/a453 x 454NANA160 x 80453x454
Sizen/a1.39 inchesNANA1.18 inches1.39 inches
Touchn/aNANA
TypeLEDAMOLEDLEDNATFT LCDAMOLED

Functions

Audio Speaker
Clock
PhoneNA
VibrationNA
Voice

Hardware

AccelerometerNA
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance5 ATM1 ATM1 ATMNAWR301 ATM

Notifications

PhoneNA
EmailsNA
TextsNA

Software

Operating Systemn/aAndroid WearNANAAndroid Wear
Apps
Music

All Wearables