Motorola Moto 360 (2nd Gen) vs. Polar M400 vs. Asus ZenWatch vs. Fitbit Flex vs. Jawbone UP4

 
Moto 360 (2nd Gen)
M400
ZenWatch
Flex
UP4
 MotorolaMoto 360 (2nd Gen)Remove Buy NowPolarM400Remove Buy NowAsusZenWatchRemove Buy NowFitbitFlexRemove Buy NowJawboneUP4Remove Buy Now

Basic Info

Suggested Price$300$200$150$100$200
Release20152014201420132015

Activity & Fitness

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

Battery

Duration1.5 days8 hours to 30 daysNA5 daysNA
Rechargeable

Compatibility

Android
iOS
Windows Phonen/an/aNANANA
Macn/aNANA
Windowsn/aNANA

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution360 x 325 or 360 x 330n/a320 x 320NANA
Size1.37 inches or 1.56 inchesn/a1.63 inchesNANA
TouchNANA
TypeLCDn/aAMOLEDLEDNA

Functions

Audio SpeakerBluetoothAlerts only
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water ResistanceIP673 ATMIP551 ATMNA

Notifications

Phone
EmailsNA
TextsNA

Software

Operating SystemAndroid Wearn/aAndroid WearNANA
Apps
Musicn/aNA

All Wearables