Apple Watch Series 3 vs. Garmin Forerunner 225 vs. Garmin 645 Music vs. Michael Kors Grayson vs. Fitbit Alta HR vs. Michael Kors Grayson

 
Watch Series 3
Forerunner 225
645 Music
Grayson
Alta HR
Grayson
 AppleWatch Series 3Remove Buy NowGarminForerunner 225Remove Buy NowGarmin645 MusicRemove Buy NowMichael KorsGraysonRemove Buy NowFitbitAlta HRRemove Buy NowMichael KorsGraysonRemove Buy Now

Basic Info

Suggested Price$329$300$450$350$150$350
Release201720152018201820172018

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration18 hours10 hours to 4 weeks7 days24 hours7 days24 hours
Rechargeable

Compatibility

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

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution340 x 272 or 390 x 312180 x 180240 x 240453 x 454128 x 36453x454
Size1.5 inches or 1.65 inches1 inch1.2 inches1.39 inches1.4 inches1.39 inches
Touch
TypeAMOLEDn/aMIPAMOLEDOLEDAMOLED

Functions

Audio Speaker22
Clock
Phonen/a
Vibration
Voice

Hardware

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

Notifications

Phonen/a
Emailsn/a
Textsn/a

Software

Operating SystemWatchOS 4n/aAndroid WearAndroid Wear
Appsn/a
Musicn/a

All Wearables