Motorola Moto 360 (2nd Gen) vs. Polar M400 vs. Polar M600 vs. Withings Activite Sapphire vs. Fitbit Charge 2

 
Moto 360 (2nd Gen)
M400
M600
Activite Sapphire
Charge 2
 MotorolaMoto 360 (2nd Gen)Remove Buy NowPolarM400Remove Buy NowPolarM600Remove Buy NowWithingsActivite SapphireRemove Buy NowFitbitCharge 2Remove Buy Now

Basic Info

Suggested Price$300$200$330$450$150
Release20152014201620142016

Activity & Fitness

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

Battery

Duration1.5 days8 hours to 30 days2 days8 months5 days
Rechargeable

Compatibility

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

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution360 x 325 or 360 x 330n/a240 x 240n/an/a
Size1.37 inches or 1.56 inchesn/a1.3 inches1.3 inchesn/a
Touchn/an/a
TypeLCDn/aTFTAnalogOLED

Functions

Audio SpeakerBluetoothAlerts onlyAlerts only
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water ResistanceIP673 ATMIPX85 ATMn/a

Notifications

Phone
Emails
Texts

Software

Operating SystemAndroid Wearn/aAndroid Wearn/an/a
Apps
Musicn/a

All Wearables