Walnut MP3 Player generates energy as it is rolled in your hands
The Walnut Player is a concept MP3 player that can be “walled rolled” to charge. It has been designed by the industrial designer YuKwang Kang and features two spherical objects, which when rolled in your hand, allow the generation of renewable electricity to charge its own onboard battery.
The player has been designed for the visually impaired and anyone else who wants to enjoy sustainable tunes. The device works with Braille writing and features a single button and finger-pressure movement applied along the device generates energy. The movement is also utilized to change tracks and speaker volume.