The Polar F4 heart rate monitor has most of the essential heart rate functions for the fitness enthusiast who wants to train "in zone" and optimise their training sessions.

The Polar F4 Heart Monitor training zone, alarm, calories burnt, backlight, fitness bullets for time in zone and it is coded to avoid crosstalk when training with other HRM users.

Polar fitness range
Polar f series
Transmitter belt

Wireless ECG accurate heart rate
Polar OwnCal© (basic)
Polar OwnCode©
Target zones with visual alarm
Target zones with audible alarm
Zone Pointer
Fitness Bullets (10 minutes in target zone)
Average heart rate of total exercise
Exercise Date
Recording features
Number of exercise files (with summaries) 1
Exercise Time (total) total
Time in target zone
Target zone limits
Average heart rate of total exercise
Calorie expenditure (Exercise/Total/Fat%)