A handsfree device for conducting a telephone call which can be established by means of a mobile telephone, comprising a controller which is connected to a microphone and a loudspeaker, and with a communication link to a receiver which can be deposited in a holder with an electrical connection, wherein the telephone call is only conducted via the receiver by removing the receiver from the holder, enables the receiver to be used very flexibly due to the fact that the controller has a wireless communication device for communicating with a corresponding wireless first communication device of the receiver and the receiver is also provided with a wireless second communication device for communicating with a corresponding wireless communication device of the mobile telephone, with a device for processing access authorization data to a mobile radio network and with a telephone transmitting and receiving unit.