A hands-free headset includes first and second earpieces and is configured such that the second earpiece is integrally mounted to and stowed against the first earpiece during mono-communications operation or during storage. The headset includes two retractable cords which engage with a portable communications...http://www.google.fr/patents/US6374126?utm_source=gb-gplus-shareBrevet US6374126 - Hands-free headset with stowable stereo earpiece
