Garmin Vivoactive vs. Fitbit Flex 2 vs. Garmin 645 Music vs. Fitbit Alta HR vs. Fitbit Charge 3

 
Vivoactive
Flex 2
645 Music
Alta HR
Charge 3
 GarminVivoactiveRemove Buy NowFitbitFlex 2Remove Buy NowGarmin645 MusicRemove Buy NowFitbitAlta HRRemove Buy NowFitbitCharge 3Remove Buy Now

Basic Info

Suggested Price$250$100$450$150$150
Release20152016201820172018

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration14 hours to 11 days5 days7 days7 days7 days
Rechargeable

Compatibility

Android
iOS
Windows Phonen/an/a
Macn/a
Windowsn/aNot yet

Connectivity

Bluetooth
Cellular
GPS
NFCNA
Wi-Fi

Display

Colorn/a
Resolution205 x 148n/a240 x 240128 x 3666 x 18
Size1.38 inchesn/a1.2 inches1.4 inches.721 inches
Touchn/a
TypeLCDLEDMIPOLEDOLED

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/an/aNA
Apps
Music

All Wearables