Fitbit Ionic vs. Garmin 645 Music vs. Garmin Vivofit 4 vs. Garmin Vivosmart HR Plus vs. Garmin VivoActive 4

 
Ionic
645 Music
Vivofit 4
Vivosmart HR Plus
VivoActive 4
 FitbitIonicRemove Buy NowGarmin645 MusicRemove Buy NowGarminVivofit 4Remove Buy NowGarminVivosmart HR PlusRemove Buy NowGarminVivoActive 4Remove Buy Now

Basic Info

Suggested Price$299$450$79.95$179$349
Release20172018201820172019

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration4+ days7 days1 year5 days8 days
Rechargeable

Compatibility

Android
iOS
Windows Phone
Mac
Windows

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution348x250240 x 24088 x 88160 x 68260 x 260
Size1.421.2 inchesNA0.5 inches x 0.8 inches1.3ionches
Touch
TypeOLEDMIPNALCDMIP

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance50m5 ATM5 ATM5 ATM5 ATM

Notifications

Phone
Emails
Texts

Software

Operating SystemFitbit OSNAWear OS
Apps
Music

All Wearables