Garmin Vivoactive HR vs. Fitbit Alta vs. Fitbit Flex 2 vs. Garmin 645 Music vs. Apple Watch Series 4

 
Vivoactive HR
Alta
Flex 2
645 Music
Watch Series 4
 GarminVivoactive HRRemove Buy NowFitbitAltaRemove Buy NowFitbitFlex 2Remove Buy NowGarmin645 MusicRemove Buy NowAppleWatch Series 4Remove Buy Now

Basic Info

Suggested Price$250$130$100$450$329
Release20162016201620182018

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration13 hours to 8 days5 days5 days7 daysNot Yet
Rechargeable

Compatibility

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

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Colorn/a
Resolution148 x 205n/an/a240 x 240384 x 480
Size1.38 inchesn/an/a1.2 inches1.78 inches
Touchn/an/a
Typen/aOLEDLEDMIPMicroLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance5 ATMn/a5 ATM5 ATMNot Yet

Notifications

Phone
Emailsn/a
Texts

Software

Operating Systemn/an/an/aWatch OS 5
Apps
Music

All Wearables