Polar M400 vs. Garmin Forerunner 235 vs. Fitbit Flex vs. Samsung Gear Fit vs. Garmin VivoActive 4

 
M400
Forerunner 235
Flex
Gear Fit
VivoActive 4
 PolarM400Remove Buy NowGarminForerunner 235Remove Buy NowFitbitFlexRemove Buy NowSamsungGear FitRemove Buy NowGarminVivoActive 4Remove Buy Now

Basic Info

Suggested Price$200$299.99$100$150$349
Release20142017201320142019

Activity & Fitness

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

Battery

Duration8 hours to 30 days9 days5 days2-3 days8 days
Rechargeable

Compatibility

Android
iOS
Windows Phonen/aNANA
MacNA
WindowsNA

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolutionn/a215 x 180NA432 x 128260 x 260
Sizen/a1.23 inchesNA1.84 inches1.3ionches
TouchNA
Typen/aMIPLEDSuper AMOLEDMIP

Functions

Audio SpeakerAlerts only
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance3 ATM5 ATM1 ATMIP675 ATM

Notifications

Phone
Emails
Texts

Software

Operating Systemn/aNANAWear OS
Apps
Music

All Wearables