Fitbit Flex 2 vs. Garmin Forerunner 935 vs. Garmin 645 Music vs. Fitbit Flex vs. Garmin Vivofit 4

 
Flex 2
Forerunner 935
645 Music
Flex
Vivofit 4
 FitbitFlex 2Remove Buy NowGarminForerunner 935Remove Buy NowGarmin645 MusicRemove Buy NowFitbitFlexRemove Buy NowGarminVivofit 4Remove Buy Now

Basic Info

Suggested Price$100$500$450$100$79.95
Release20162017201820132018

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration5 daysUp to 2 weeks7 days5 days1 year
Rechargeable

Compatibility

Android
iOS
Windows Phonen/aNA
Mac
Windows

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Colorn/a
Resolutionn/a240 x 240240 x 240NA88 x 88
Sizen/a1.2 inches1.2 inchesNANA
Touchn/aNA
TypeLEDLCDMIPLEDNA

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

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

Notifications

Phone
Emails
Texts

Software

Operating Systemn/aNA
Apps
Music

All Wearables