Motorola Moto 360 (2nd Gen) vs. Polar M400 vs. Polar M430 vs. Garmin 645 Music vs. Fitbit Flex

 
Moto 360 (2nd Gen)
M400
M430
645 Music
Flex
 MotorolaMoto 360 (2nd Gen)Remove Buy NowPolarM400Remove Buy NowPolarM430Remove Buy NowGarmin645 MusicRemove Buy NowFitbitFlexRemove Buy Now

Basic Info

Suggested Price$300$200$255$450$100
Release20152014201720182013

Activity & Fitness

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

Battery

Duration1.5 days8 hours to 30 days30 hours7 days5 days
Rechargeable

Compatibility

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

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution360 x 325 or 360 x 330n/a128x128240 x 240NA
Size1.37 inches or 1.56 inchesn/a1.4 inch1.2 inchesNA
TouchNA
TypeLCDn/aLCDMIPLED

Functions

Audio SpeakerBluetoothAlerts only
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water ResistanceIP673 ATMWR305 ATM1 ATM

Notifications

Phone
Emails
Texts

Software

Operating SystemAndroid Wearn/aNA
Apps
Musicn/a

All Wearables