Polar M400 vs. Polar Loop 2 vs. Apple Watch vs. Fitbit Flex

 
M400
Loop 2
Watch
Flex
 PolarM400Remove Buy NowPolarLoop 2Remove Buy NowAppleWatchRemove Buy NowFitbitFlexRemove Buy Now

Basic Info

Suggested Price$200$120$349$100
Release2014201520152013

Activity & Fitness

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

Battery

Duration8 hours to 30 days8 days (without notifications)18 hours5 days
Rechargeable

Compatibility

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

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolutionn/an/a340 x 272 or 390 x 312NA
Sizen/an/a1.5 inches or 1.65 inchesNA
TouchNA
Typen/aLEDAMOLEDLED

Functions

Audio SpeakerAlerts only
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance3 ATM2 ATMIPX71 ATM

Notifications

Phone
Emails
Texts

Software

Operating Systemn/an/aWatch OSNA
Apps
Music

All Wearables