Motorola Moto 360 (2nd Gen) vs. Polar M400 vs. Garmin Forerunner 235 vs. Fitbit Flex vs. Apple Watch Series 4

 
Moto 360 (2nd Gen)
M400
Forerunner 235
Flex
Watch Series 4
 MotorolaMoto 360 (2nd Gen)Remove Buy NowPolarM400Remove Buy NowGarminForerunner 235Remove Buy NowFitbitFlexRemove Buy NowAppleWatch Series 4Remove Buy Now

Basic Info

Suggested Price$300$200$299.99$100$329
Release20152014201720132018

Activity & Fitness

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

Battery

Duration1.5 days8 hours to 30 days9 days5 daysNot Yet
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/a215 x 180NA384 x 480
Size1.37 inches or 1.56 inchesn/a1.23 inchesNA1.78 inches
TouchNA
TypeLCDn/aMIPLEDMicroLED

Functions

Audio SpeakerBluetoothAlerts only
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water ResistanceIP673 ATM5 ATM1 ATMNot Yet

Notifications

Phone
Emails
Texts

Software

Operating SystemAndroid Wearn/aNAWatch OS 5
Apps
Musicn/a

All Wearables