Designed by Pekka Salokannel,the Gramo Speakers are just what you need to green your musical life.The speakers are powered by three layers of photovoltaic panels thatare incorporated onto their surface. The solar panels charge thebuilt-in battery pack, allowing the user to use the speakers even aftersunset.
Ifyou want some digital entertainment when outdoors, the speakers can bebend flat and carried in a pocket. The volume can be adjusted using thesoft touch sensitive control, which the speaker is equipped with. Gramo is designed to be compatible with most DAPs including the iPod and iPhone.