The invention relates generally to data transfer of the heart rate and activity monitor arrangement. The arrangement includes heart rate monitoring elements for monitoring a user's heart rate, motion detection elements for monitoring the user's activity, control elements for obtaining data from the heart rate monitoring elements and from the motion detection elements, and transferring element including at least one transceiver. Further, the transferring element is arranged to transfer heart rate and/or activity data monitored by the heart rate and activity monitor arrangement to an external entity directly via a wireless cellular communications system.
