US Patent 9055156 Auxiliary speaker and microphone system for cellular phone

A supplemental speaker and microphone system for use with a cellular phone has a plug to connect to an audio socket of the cellular phone. A base of the system carries a speaker, a primary microphone and a primary transceiver. A pair of remote microphone pucks is removably disposed on the base, and each has a secondary microphone, a secondary transceiver, and a battery. The system converts the cellular phone into a conference phone without the need of wirelessly connecting the cellular phone to the system.