Garmin Forerunner 935 vs. Casio WSD-F20A vs. Garmin 645 Music vs. Samsung Galaxy Watch vs. Fitbit Flex

 
Forerunner 935
WSD-F20A
645 Music
Galaxy Watch
Flex
 GarminForerunner 935Remove Buy NowCasioWSD-F20ARemove Buy NowGarmin645 MusicRemove Buy NowSamsungGalaxy WatchRemove Buy NowFitbitFlexRemove Buy Now

Basic Info

Suggested Price$500$399$450$330$100
Release20172018201820182013

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

DurationUp to 2 weeks1 day7 days7 days5 days
Rechargeable

Compatibility

Android
iOS
Windows PhoneNA
Mac
Windows

Connectivity

Bluetooth
CellularNA
GPS
NFC
Wi-Fi

Display

Color
Resolution240 x 240320 x 320240 x 240360 x 360NA
Size1.2 inches1.32 inches1.2 inches1.2 inches or 1.3 inchesNA
TouchNA
TypeLCDLCDMIPAMOLEDLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

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

Notifications

Phone
Emails
Texts

Software

Operating SystemWear OSTizen OSNA
Apps
MusicSpotify

All Wearables