Garmin Forerunner 225 vs. Polar M400 vs. Fitbit Flex 2 vs. Garmin Forerunner 235 vs. Fitbit Flex

 
Forerunner 225
M400
Flex 2
Forerunner 235
Flex
 GarminForerunner 225Remove Buy NowPolarM400Remove Buy NowFitbitFlex 2Remove Buy NowGarminForerunner 235Remove Buy NowFitbitFlexRemove Buy Now

Basic Info

Suggested Price$300$200$100$299.99$100
Release20152014201620172013

Activity & Fitness

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

Battery

Duration10 hours to 4 weeks8 hours to 30 days5 days9 days5 days
Rechargeable

Compatibility

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

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Colorn/a
Resolution180 x 180n/an/a215 x 180NA
Size1 inchn/an/a1.23 inchesNA
Touchn/aNA
Typen/an/aLEDMIPLED

Functions

Audio Speaker22Alerts only
Clock
Phonen/a
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance5 ATM3 ATM5 ATM5 ATM1 ATM

Notifications

Phonen/a
Emailsn/a
Textsn/a

Software

Operating Systemn/an/an/aNA
Appsn/a
Musicn/a

All Wearables