Fitbit One vs. Garmin 645 Music vs. Fitbit Flex vs. Fitbit Inspire HR vs. Garmin VivoActive 4

 
One
645 Music
Flex
Inspire HR
VivoActive 4
 FitbitOneRemove Buy NowGarmin645 MusicRemove Buy NowFitbitFlexRemove Buy NowFitbitInspire HRRemove Buy NowGarminVivoActive 4Remove Buy Now

Basic Info

Suggested Price$100$450$100$99$349
Release20122018201320192019

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration10-14 days7 days5 days5 days8 days
Rechargeable

Compatibility

Android
iOS
Windows Phonen/aNA
Mac
Windows

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolutionn/a240 x 240NA139 x 60260 x 260
Sizen/a1.2 inchesNA1.4 inches1.3ionches
TouchNA
TypeOLEDMIPLEDOLEDMIP

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water ResistanceSplast Resistant5 ATM1 ATM5 ATM5 ATM

Notifications

Phone
Emails
Texts

Software

Operating Systemn/aNAFitbit OSWear OS
Apps
Music

All Wearables