Polar® M400

Starting at $229.00

Convenience of a heart rate monitor, activity tracker, and GPS all in one.

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In addition to all the standard heart rate features, the Polar® M400 with heart rate monitor includes features such as a finish time estimator and interval timer. It is the most advanced monitor we offer, with an included GPS function, the only monitor we have with a GPS function included.


  • Monitor Tracks
    • Average and Max Heart Rate
    • Time in Target Zones
    • Total Exercise Time
    • Activity Tracking
    • Steps
    • Distance
    • Calories
  • ECG sensor tracks the heart's electrical signals for the greatest accuracy.
  • Chest strap transmits data to wristwatch monitor for easy tracking during use.
  • Built-in GPS tracks pace, distance, and altitude without being linked to a smartphone.
  • Visual/audio alarms sound when a user enters or exists their target heart rate zone.
  • Monitor easily transfers data to the Polar Flow app to assess users.
  • Vibrating inactivity alerts prevent sedentary behavior among students.
  • Water-resistant up to 30 m.
  • Storage case included in packs makes it easy to organize and protect equipment when not in use.

Heart rate monitor packs include monitors, chest straps, and locking case.

Which heart rate monitor is right for me?