Polar M400 vs. Fitbit Alta vs. Garmin Forerunner 235 vs. Garmin Vivoactive 3 vs. Fitbit Flex

 
M400
Alta
Forerunner 235
Vivoactive 3
Flex
 PolarM400Remove Buy NowFitbitAltaRemove Buy NowGarminForerunner 235Remove Buy NowGarminVivoactive 3Remove Buy NowFitbitFlexRemove Buy Now

Basic Info

Suggested Price$200$130$299.99$299$100
Release20142016201720172013

Activity & Fitness

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

Battery

Duration8 hours to 30 days5 days9 days7 days5 days
Rechargeable

Compatibility

Android
iOS
Windows Phonen/aNA
Mac
Windows

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolutionn/an/a215 x 180240 x 240NA
Sizen/an/a1.23 inches1.2 inchesNA
Touchn/aNA
Typen/aOLEDMIPMIPLED

Functions

Audio SpeakerAlerts only
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance3 ATMn/a5 ATM5 ATM1 ATM

Notifications

Phone
Emailsn/a
Texts

Software

Operating Systemn/an/aNA
Apps
Music

All Wearables