Polar RS400 Heart Rate Monitor Review

The Polar RS400 is a heart rate training watch for the advanced endurance athlete and runner who want to include systematic training into their cardio workout programs. Training with a heart rate monitor can help to avoid over or under training by helping to keep you within your training zone as you workout.


Click here to shop for Polar RS400 Heart Rate Monitor.


To start using your Polar heart rate monitor, you should perform the 5-minuet Polar Fitness Test. This test measures your aerobic fitness level at rest and calculates your personal OwnIndex by evaluating your maximal oxygen uptake or VO2max. This test can be performed by you and automatically defines our OwnIndex without any exertion. The Fitness test is based on heart rate and heart rate variability at rest as well as personal information that you supply. It is as accurate in predicting the VO2max as any sub maximal fitness test.

After you’ve completed the on-board fitness test, then the monitor takes over. As you train the RS400 measures detailed information about your workout and keeps you informed about your progress. The RS400 comes with the Polar ProTrainer 5 software for your computer for analyzing, planning and keeping a training log.


Polar RS400 Body Measurement Features

  • Automatic age-based target zone – bpm (beats per min), % MHR (max heart rate), % HRR (heart rate reserve)
  • Average and MHR of each lap
  • Average, minimum and MHR of training
  • Heart rate – bpm, % MHR, % HRR
  • HR-based target zones with visual and audible alarm
  • HRmax (age-based)
  • HRmax (Polar Fitness Test-based)
  • Manual target zone – bpm, % MHR, % HRR
  • Polar Fitness Test
  • Polar OwnCal – calorie expenditure
  • Polar OwnCode – coded transmission
  • Polar OwnOptimizer – personal training status
  • Polar Own Zone – personal heart rate zone
  • Polar sports zone


Polar RS400 Training Features

  • Automatic lap recording
  • Display zoom
  • Graphical target zone indicator
  • HeartTouch – button-free operation
  • Interval trainer guided workouts
  • Number of laps – 99
  • Time and distance based interval timers
  • User configurable displays – all lines
  • Zone lock
  • ZonePointer


Polar RS400 Watch Features

  • Backlight
  • Date and weekday indicator
  • English, German, French and Spanish
  • Dual time zone
  • KeyLock
  • Low battery indicator
  • Reminders
  • StopWatch
  • Time of day (12/24h) with alarm and snooze
  • User replaceable battery
  • Water resistant – 50m

All Polar heart rate monitors come with a 2-year warrantee that guarantees their products to be free from defects in material or workmanship from the date of purchase. This warrantee only applies to the original consumer of the heart rate monitor. 


Optional Accesories


For accurately measuring your running speed, pace and distance, Polar makes the S1 Foot Pod, which is compatible with the RS400. Just attached it to your shoelaces like a race chip, and this shock and water resistant sensor will feed information directly into your heart rate monitor.

For more information click on Polar RS400 Heart Rate Monitor.

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