The set is designed to amplify processions, pilgrimages, etc. It has a transmitting-receiving radio-set, and a wireless microphone. It is fed by a 12V internal gel accumulator. The set has a built-in accumulator state signalling system. It has sockets to connect: a microphone, additional megaphone type loudspeakers, and a chargeable power supply adaptor (the power supply adaptor is included in the set). It has remote and wired microphone volume-control, and a transmitter activation signalling.