Yea, this idea has been around for decades, and this is exactly what you are looking for,
http://pocketnow.com/wp-content/uploads/2012/08/EarHorn.jpg
but you would probably want the top of the line model here,
http://huttshead.files.wordpress.com/2012/11/oreilles-dutch-ecoute-ww-03.jpg
Sorry, I just don't know any dealers.
http://pocketnow.com/wp-content/uploads/2012/08/EarHorn.jpg
but you would probably want the top of the line model here,
http://huttshead.files.wordpress.com/2012/11/oreilles-dutch-ecoute-ww-03.jpg
Sorry, I just don't know any dealers.