Garmin Forerunner 935 vs. Garmin 645 Music vs. Samsung Galaxy Watch vs. Fitbit Charge 3 vs. Fitbit Flex

 
Forerunner 935
645 Music
Galaxy Watch
Charge 3
Flex
 GarminForerunner 935Remove Buy NowGarmin645 MusicRemove Buy NowSamsungGalaxy WatchRemove Buy NowFitbitCharge 3Remove Buy NowFitbitFlexRemove Buy Now

Basic Info

Suggested Price$500$450$330$150$100
Release20172018201820182013

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

DurationUp to 2 weeks7 days7 days7 days5 days
Rechargeable

Compatibility

Android
iOS
Windows PhoneNA
Mac
WindowsNot yet

Connectivity

Bluetooth
CellularNA
GPS
NFCNA
Wi-Fi

Display

Color
Resolution240 x 240240 x 240360 x 36066 x 18NA
Size1.2 inches1.2 inches1.2 inches or 1.3 inches.721 inchesNA
TouchNA
TypeLCDMIPAMOLEDOLEDLED

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 SystemTizen OSNANA
Apps
MusicSpotify

All Wearables