Casio WSD-F20A vs. Fossil Explorist vs. Garmin 645 Music vs. Fitbit Alta HR vs. Apple Watch 8

 
WSD-F20A
Explorist
645 Music
Alta HR
Watch 8
 CasioWSD-F20ARemove Buy NowFossilExploristRemove Buy NowGarmin645 MusicRemove Buy NowFitbitAlta HRRemove Buy NowAppleWatch 8Remove Buy Now

Basic Info

Suggested Price$399$255$450$150$499
Release20182018201820172022

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration1 day24 hours7 days7 days18 hrs
Rechargeable

Compatibility

Android
iOS
Windows Phone
Mac
Windows

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution320 x 320454 x454240 x 240128 x 36340 x 272 or 390 x 312
Size1.32 inches1.4 inches1.2 inches1.4 inches1.5 inches or 1.65 inches
Touch
TypeLCDAMOLEDMIPOLEDAMOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance5 ATMIP675 ATM5 ATM

Notifications

Phone
Emails
Texts

Software

Operating SystemWear OSWear OSWatchOS 9
Apps
Music

All Wearables