An apparatus for enabling hands free operation of cell phones and other portable electronic devices is disclosed. The apparatus may include a headset having a housing and a set of extendable links coupled at a base end to the housing and coupled at an opposite end to an end cap. The set of extendable...http://www.google.com.tw/patents/US7634082?utm_source=gb-gplus-share專利 US7634082 - Retractable telephone holding unit
