Garmin Vivosmart HR vs. Garmin 645 Music vs. Fitbit Flex vs. Garmin Vivofit 4 vs. Garmin Forerunner 45

 
Vivosmart HR
645 Music
Flex
Vivofit 4
Forerunner 45
 GarminVivosmart HRRemove Buy NowGarmin645 MusicRemove Buy NowFitbitFlexRemove Buy NowGarminVivofit 4Remove Buy NowGarminForerunner 45Remove Buy Now

Basic Info

Suggested Price$170$450$100$79.95$199
Release20152018201320182019

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration5 days7 days5 days1 year7 days
Rechargeable

Compatibility

Android
iOS
Windows Phonen/aNA
Macn/a
Windowsn/a

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution160 x 68240 x 240NA88 x 88208 x 208
Size1.08 inches1.2 inchesNANA1.04 inches
TouchNA
Typen/aMIPLEDNALCD

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

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

Notifications

Phone
Emails
Texts

Software

Operating Systemn/aNABuilt-in
Apps
Music

All Wearables