Etón, a producer of high-performance, green-powered consumer products has announced a solar-powered Bluetooth sound system. The Rukus integrates two 2.25-inch drivers with a 14-watt amplifier, an energy-efficient E Ink SURF segmented display, and a monocrystal solar panel to offer environmentally friendly portable stereo sound. The Rukus can also recharge the source device while it is playing the music.