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

 
Moto 360 (2nd Gen)
M400
Flex 2
UP4
Reign
 MotorolaMoto 360 (2nd Gen)Remove Buy NowPolarM400Remove Buy NowFitbitFlex 2Remove Buy NowJawboneUP4Remove Buy NowJaybirdReignRemove Buy Now

Basic Info

Suggested Price$300$200$100$200$150
Release20152014201620152015

Activity & Fitness

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

Battery

Duration1.5 days8 hours to 30 days5 daysNA5 days
Rechargeable

Compatibility

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

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Colorn/a
Resolution360 x 325 or 360 x 330n/an/aNANA
Size1.37 inches or 1.56 inchesn/an/aNANA
Touchn/aNANA
TypeLCDn/aLEDNALED

Functions

Audio SpeakerBluetoothAlerts only
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water ResistanceIP673 ATM5 ATMNANA

Notifications

Phone
Emails
Texts

Software

Operating SystemAndroid Wearn/an/aNANA
Apps
Musicn/aNA

All Wearables