Fitbit Flex 2 vs. Fitbit Zip vs. Garmin Vivosmart vs. Garmin 645 Music vs. Garmin VivoActive 4

 
Flex 2
Zip
Vivosmart
645 Music
VivoActive 4
 FitbitFlex 2Remove Buy NowFitbitZipRemove Buy NowGarminVivosmartRemove Buy NowGarmin645 MusicRemove Buy NowGarminVivoActive 4Remove Buy Now

Basic Info

Suggested Price$100$60$170$450$349
Release20162012201420182019

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heartn/a
Oxygen
Sleep
Steps
Swim

Battery

Duration5 days6 months7 days7 days8 days
Rechargeable

Compatibility

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

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Colorn/a
Resolutionn/an/a128 x 16240 x 240260 x 260
Sizen/an/a1.41 inches1.2 inches1.3ionches
Touchn/a
TypeLEDn/aOLEDMIPMIP

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance5 ATMSplash Resistant5 ATM5 ATM5 ATM

Notifications

Phone
Emails
Texts

Software

Operating Systemn/an/an/aWear OS
Apps
Music

All Wearables