Conference call with up to 4 riders. Up to four motor cyclists can communicate with each other at the same time with the SRC-System™ PRO. Up to 9 bikers can communicate using the SRC, if the participants speak "consecutively" (1+8 intercom) using the speech recognition technology for true hands free talking Click-to-Link®: If other SRC-System™ users are close by, these can be addressed. The range is up to 1000 metres, depending on the terrain. Should the distance be greater or the terrain more demanding, communication is bridged by mobile reception. Thus, communication is not broken even when the distance is greater.