Fitbit Charge 2 vs. Fitbit Flex 2 vs. Fitbit One vs. Michael Kors Grayson vs. Pebble Core vs. Michael Kors Grayson

 
Charge 2
Flex 2
One
Grayson
Core
Grayson
 FitbitCharge 2Remove Buy NowFitbitFlex 2Remove Buy NowFitbitOneRemove Buy NowMichael KorsGraysonRemove Buy NowPebbleCoreRemove Buy NowMichael KorsGraysonRemove Buy Now

Basic Info

Suggested Price$150$100$100$350$99$350
Release201620162012201820162018

Activity & Fitness

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

Battery

Duration5 days5 days10-14 days24 hoursNA24 hours
Rechargeable

Compatibility

Android
iOSNA
Windows Phonen/an/aNA
MacNA
WindowsNA

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Colorn/a
Resolutionn/an/an/a453 x 454NA453x454
Sizen/an/an/a1.39 inchesNA1.39 inches
Touchn/an/aNA
TypeOLEDLEDOLEDAMOLEDNAAMOLED

Functions

Audio Speaker
Clock
PhoneNA
VibrationNA
Voice

Hardware

AccelerometerNA
Barometer or Altimeter
Ultraviolet Sensor
Water Resistancen/a5 ATMSplast Resistant1 ATMNA1 ATM

Notifications

PhoneNA
EmailsNA
TextsNA

Software

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

All Wearables