The Eton Rugged Rukus is a solar-powered Bluetooth speaker. Its solar panel generates sufficient energy to play music for an entire day. After dark, an internal lithium battery keeps the music going for another eight hours, streamed from any Bluetooth-enabled device. The compact housing is encased by a high-impact rubber surface and can be positioned upright or horizontally. Alternatively, two corner loops allow the unit to be attached to other items, for instance a backpack or a tent.