portable total amp; auml; rkersatz and kopfh amp; all; rer with umschaltbarem rate r amp; t. the freisprechfunktion; r

摘要

A portable hand-free kit comprised of an amplification set and an ear set within interchangeable talking modes, the amplification set including a front casing and a rear casing buckled to each other, a PCB locked between both casings adapted to a mobile hand-set; a conduction circuit laid on the PCB adapted with a microphone, a speaker, a rechargeable battery and a switch to shuttle between two conversation modes; and the amplification set being buckled to the ear set allowing conversation in the amplification talking mode or switch to the ear set talking mode if privacy is desired.