Polar M400 vs. Withings Activite Steel vs. Garmin Forerunner 235 vs. Samsung Gear 2 vs. Fitbit Flex

 
M400
Activite Steel
Forerunner 235
Gear 2
Flex
 PolarM400Remove Buy NowWithingsActivite SteelRemove Buy NowGarminForerunner 235Remove Buy NowSamsungGear 2Remove Buy NowFitbitFlexRemove Buy Now

Basic Info

Suggested Price$200$170$299.99$300$100
Release20142015201720142013

Activity & Fitness

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

Battery

Duration8 hours to 30 days8 months9 days2-3 days5 days
Rechargeable

Compatibility

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

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolutionn/an/a215 x 180320 x 320NA
Sizen/a1.3 inches1.23 inches1.63 inchesNA
TouchNA
Typen/aAnalogMIPSuper AMOLEDLED

Functions

Audio SpeakerAlerts onlyBluetooth
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance3 ATM5 ATM5 ATMIP671 ATM

Notifications

Phone
Emails
Texts

Software

Operating Systemn/an/aTizen OSNA
Apps
Music

All Wearables