Garmin Forerunner 225 vs. Polar M400 vs. Fitbit Charge vs. Fitbit Flex vs. Amazfit GTR

 
Forerunner 225
M400
Charge
Flex
GTR
 GarminForerunner 225Remove Buy NowPolarM400Remove Buy NowFitbitChargeRemove Buy NowFitbitFlexRemove Buy NowAmazfitGTRRemove Buy Now

Basic Info

Suggested Price$300$200$130$100$199
Release20152014201420132019

Activity & Fitness

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

Battery

Duration10 hours to 4 weeks8 hours to 30 days7-10 days5 days24 days
Rechargeable

Compatibility

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

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution180 x 180n/aNANA454 x 454
Size1 inchn/aNANA1.39 inches
TouchNANA
Typen/an/aOLEDLEDAMOLED

Functions

Audio Speaker22Alerts only
Clock
Phonen/a
Vibration
Voice

Hardware

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

Notifications

Phonen/a
Emailsn/a
Textsn/a

Software

Operating Systemn/an/aNANABuild-in
Appsn/a
Musicn/a

All Wearables