‘wireless headsets’ designed to be used solely or principally with telephones for cellular networks (mobile phones), intended to be hung on the ear to provide a hands-free option. They enable the user to control telephone functions, such as answering, ending and dialling (for example, redialling the last call), within approximately 10 m from the mobile phone and have means for adjusting the earphone sound volume. These headsets incorporate a radio transmitter/receiver to communicate with a mobile phone by means of wireless technology, for example, ‘Bluetooth’. These are separately presented wireless headsets (combination of a headphone and a microphone) with dialling capability.