Abstract: The invention relates to a heart rate monitor. The essential point of the invention is that a display element (201) of a display (20) of the heart rate monitor for displaying a settable minimum limit for a heart rate level is located at a first end (211) of a display element unit (210) controlled according to the heart rate level, on the same side of the display as the first end of the display element unit. Similarly, a display element (202) for displaying a settable maximum limit for a heart rate level is located at a second end (220) of the display element unit (210), on the same side of the display as the second end of the display element unit.

Abstract: An arrangement for heartbeat detection, the arrangement comprising a first measuring device (202) for measuring the heart rate signal of a person on the skin of the person in a first measuring area, a second measuring device (204) for measuring the heart rate signal (204A) of a person on the skin of the person in a second measuring area simultaneously with the measurement made in the first measuring area, which first measuring device (202) comprises a transmitter (756) for transmitting the timing information (104A) formed in the first measuring area to the second measuring device (204), which second measuring device (204) comprises a receiver (714) for receiving the timing information (104A) transmitted from the first measuring device (202), which second measuring device (204) comprises a detection means (718) for detecting the heartbeat by means of the heart rate signal (204A) measured in the second measuring area and the timing information (104A) received from the first measuring device (202).