This is exactly the clock after I had been looking for and the corresponding my needs. I use them exclusively for the training on the elliptical machine. Very easy to use. Had for many years a Polarpulsuhr (M-series, so very old), then a real polar tech equipment and with whom I was only unhappy, described similar problems of other Polaruhrnutzern. I would decide again for this clock and can recommend for athletes who need an accurate pulse indication, training time, and home Outzone function and calorie consumption.