Headphone or Speaker by Lu Chieh Hua

Designed by Lu Chieh Hua, Headphone or Speaker combines the lightweight mobility of headphones with the sound amplification of a speaker into a single unit that makes it possible to both listen to your music privately or share with others. A unique twisting mechanism allows the unit to be propped upright for directing sound and automatically shifts playing modes and volume between operations, transforming it from headphone to speaker in a flash. [via YankoDesign]