Mobile telephone headset has electrical energy storage device is installed so as to be easily replaceable by the user; accumulator forms part of outer wall of housing when installed

摘要

The device has a housing (10,12) that contains a loudspeaker, a microphone, an electronic circuit and an electrical energy storage device (18) on a plug-shaped protrusion (14) that can be inserted into the ear. The electrical energy storage device is installed so as to be easily replaceable by the user. An accumulator acting as the electrical energy storage device forms part of the outer wall of the housing when in the installed state.