Fitbit One vs. Casio WSD-F20A vs. Michael Kors Grayson vs. Polar Loop vs. Michael Kors Grayson vs. Apple Watch 7

 
One
WSD-F20A
Grayson
Loop
Grayson
Watch 7
 FitbitOneRemove Buy NowCasioWSD-F20ARemove Buy NowMichael KorsGraysonRemove Buy NowPolarLoopRemove Buy NowMichael KorsGraysonRemove Buy NowAppleWatch 7Remove Buy Now

Basic Info

Suggested Price$100$399$350$100$350$429
Release201220182018201320182021

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration10-14 days1 day24 hours5 days24 hours18 Hours
Rechargeable

Compatibility

Android
iOS
Windows Phonen/aNA
MacNA
WindowsNA

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolutionn/a320 x 320453 x 454NA453x454396 x 484
Sizen/a1.32 inches1.39 inchesNA1.39 inches1.9 inches
Touch
TypeOLEDLCDAMOLEDLEDAMOLEDMicroLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water ResistanceSplast Resistant5 ATM1 ATM2 ATM1 ATMwater resistant but not waterproof

Notifications

Phone
Emails
Texts

Software

Operating Systemn/aWear OSAndroid WearNAAndroid WearWatchOS 8
Apps
Music

All Wearables