Fitbit Flex 2 vs. Fitbit Zip vs. Asus ZenWatch vs. Garmin 645 Music vs. Garmin Vivofit 4

 
Flex 2
Zip
ZenWatch
645 Music
Vivofit 4
 FitbitFlex 2Remove Buy NowFitbitZipRemove Buy NowAsusZenWatchRemove Buy NowGarmin645 MusicRemove Buy NowGarminVivofit 4Remove Buy Now

Basic Info

Suggested Price$100$60$150$450$79.95
Release20162012201420182018

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration5 days6 monthsNA7 days1 year
Rechargeable

Compatibility

Android
iOS
Windows Phonen/an/aNA
MacNA
WindowsNA

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Colorn/a
Resolutionn/an/a320 x 320240 x 24088 x 88
Sizen/an/a1.63 inches1.2 inchesNA
Touchn/a
TypeLEDn/aAMOLEDMIPNA

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance5 ATMSplash ResistantIP555 ATM5 ATM

Notifications

Phone
EmailsNA
TextsNA

Software

Operating Systemn/an/aAndroid Wear
Apps
Music

All Wearables