Fitbit Flex 2 vs. Asus ZenWatch vs. Fitbit Alta HR vs. Fitbit Charge HR vs. Jawbone UP4

 
Flex 2
ZenWatch
Alta HR
Charge HR
UP4
 FitbitFlex 2Remove Buy NowAsusZenWatchRemove Buy NowFitbitAlta HRRemove Buy NowFitbitCharge HRRemove Buy NowJawboneUP4Remove Buy Now

Basic Info

Suggested Price$100$150$150$150$200
Release20162014201720152015

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration5 daysNA7 days5 daysNA
Rechargeable

Compatibility

Android
iOS
Windows Phonen/aNANANA
MacNANA
WindowsNANA

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Colorn/a
Resolutionn/a320 x 320128 x 36NANA
Sizen/a1.63 inches1.4 inchesNANA
Touchn/aNANA
TypeLEDAMOLEDOLEDOLEDNA

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance5 ATMIP551 ATMNA

Notifications

Phone
EmailsNA
TextsNA

Software

Operating Systemn/aAndroid WearNANA
Apps
MusicNA

All Wearables