Apple Watch Series 3 vs. Garmin Forerunner 225 vs. Polar M400 vs. Garmin Forerunner 235 vs. Fitbit Flex

 
Watch Series 3
Forerunner 225
M400
Forerunner 235
Flex
 AppleWatch Series 3Remove Buy NowGarminForerunner 225Remove Buy NowPolarM400Remove Buy NowGarminForerunner 235Remove Buy NowFitbitFlexRemove Buy Now

Basic Info

Suggested Price$329$300$200$299.99$100
Release20172015201420172013

Activity & Fitness

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

Battery

Duration18 hours10 hours to 4 weeks8 hours to 30 days9 days5 days
Rechargeable

Compatibility

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

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution340 x 272 or 390 x 312180 x 180n/a215 x 180NA
Size1.5 inches or 1.65 inches1 inchn/a1.23 inchesNA
TouchNA
TypeAMOLEDn/an/aMIPLED

Functions

Audio Speaker22Alerts only
Clock
Phonen/a
Vibration
Voice

Hardware

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

Notifications

Phonen/a
Emailsn/a
Textsn/a

Software

Operating SystemWatchOS 4n/an/aNA
Appsn/a
Musicn/a

All Wearables