Apple Watch Series 3 vs. Fitbit Flex 2 vs. Casio G-Shock GBA800 vs. Casio WSD-F20A vs. Garmin 645 Music

 
Watch Series 3
Flex 2
G-Shock GBA800
WSD-F20A
645 Music
 AppleWatch Series 3Remove Buy NowFitbitFlex 2Remove Buy NowCasioG-Shock GBA800Remove Buy NowCasioWSD-F20ARemove Buy NowGarmin645 MusicRemove Buy Now

Basic Info

Suggested Price$329$100$120$399$450
Release20172016201820182018

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration18 hours5 days2 years1 day7 days
Rechargeable

Compatibility

Android
iOS
Windows Phonen/a
Mac
Windows

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Colorn/a
Resolution340 x 272 or 390 x 312n/a320 x 320240 x 240
Size1.5 inches or 1.65 inchesn/a1.32 inches1.2 inches
Touchn/a
TypeAMOLEDLEDLCDMIP

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance5 ATM5 ATM20 ATM5 ATM5 ATM

Notifications

Phone
Emails
Texts

Software

Operating SystemWatchOS 4n/aWear OS
Apps
Music

All Wearables