Garmin Forerunner 225 vs. Polar M400 vs. Fitbit Alta vs. Diesel On Full Guard vs. Fitbit Flex

 
Forerunner 225
M400
Alta
On Full Guard
Flex
 GarminForerunner 225Remove Buy NowPolarM400Remove Buy NowFitbitAltaRemove Buy NowDieselOn Full GuardRemove Buy NowFitbitFlexRemove Buy Now

Basic Info

Suggested Price$300$200$130$325$100
Release20152014201620172013

Activity & Fitness

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

Battery

Duration10 hours to 4 weeks8 hours to 30 days5 days1 day5 days
Rechargeable

Compatibility

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

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution180 x 180n/an/a454 x 454NA
Size1 inchn/an/a1.4 inchesNA
Touchn/aNA
Typen/an/aOLEDOMOLEDLED

Functions

Audio Speaker22Alerts only
Clock
Phonen/a
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance5 ATM3 ATMn/aIP671 ATM

Notifications

Phonen/a
Emailsn/an/a
Textsn/a

Software

Operating Systemn/an/an/aAndroid Wear 2.0NA
Appsn/a
Musicn/a

All Wearables