Depending on the Polar product model and accessories used, the samples of your heart rate, speed, cycling cadence, power and altitude are stored in 1, 5, 15 or 60 second intervals. A longer interval gives you more recording time, while a shorter interval allows you to record more detailed data. A shorter recording rate uses the memory of the running and cycling computer up more rapidly. The remaining recording time is shown at the start of the workout or on the bottom row of the product display when setting the recording rate. The samples recorded during your workout are transferred to the software where they can be used to further analyse your training.