Fitbit Flex 2 vs. Garmin 645 Music vs. Fitbit Alta HR vs. Garmin Vivosmart HR Plus vs. Garmin Vivosport

 
Flex 2
645 Music
Alta HR
Vivosmart HR Plus
Vivosport
 FitbitFlex 2Remove Buy NowGarmin645 MusicRemove Buy NowFitbitAlta HRRemove Buy NowGarminVivosmart HR PlusRemove Buy NowGarminVivosportRemove Buy Now

Basic Info

Suggested Price$100$450$150$179$199
Release20162018201720172017

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration5 days7 days7 days5 days7 days
Rechargeable

Compatibility

Android
iOS
Windows Phonen/a
Mac
Windows

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Colorn/a
Resolutionn/a240 x 240128 x 36160 x 6872 x 144
Sizen/a1.2 inches1.4 inches0.5 inches x 0.8 inchesNA
Touchn/a
TypeLEDMIPOLEDLCDMIP

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

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

Notifications

Phone
Emails
Texts

Software

Operating Systemn/aNA
Apps
Music

All Wearables