Portable devices configured to be worn as a belt buckle are disclosed herein. The portable device includes a housing, a first connector attached to the housing and adapted to slideably receive a belt, and a second connector attached to the housing and adapted to secure the housing to the belt....http://www.google.fr/patents/US7848093?utm_source=gb-gplus-shareBrevet US7848093 - Digital video and music player belt buckles