Fitbit One vs. Michael Kors Grayson vs. Fitbit Flex vs. Apple Watch Series 4 vs. Michael Kors Grayson vs. Fitbit Inspire HR

 
One
Grayson
Flex
Watch Series 4
Grayson
Inspire HR
 FitbitOneRemove Buy NowMichael KorsGraysonRemove Buy NowFitbitFlexRemove Buy NowAppleWatch Series 4Remove Buy NowMichael KorsGraysonRemove Buy NowFitbitInspire HRRemove Buy Now

Basic Info

Suggested Price$100$350$100$329$350$99
Release201220182013201820182019

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration10-14 days24 hours5 daysNot Yet24 hours5 days
Rechargeable

Compatibility

Android
iOS
Windows Phonen/aNA
Mac
Windows

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolutionn/a453 x 454NA384 x 480453x454139 x 60
Sizen/a1.39 inchesNA1.78 inches1.39 inches1.4 inches
TouchNA
TypeOLEDAMOLEDLEDMicroLEDAMOLEDOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water ResistanceSplast Resistant1 ATM1 ATMNot Yet1 ATM5 ATM

Notifications

Phone
Emails
Texts

Software

Operating Systemn/aAndroid WearNAWatch OS 5Android WearFitbit OS
Apps
Music

All Wearables