Here is another Solar enabled device from Eton yet again. The Eton Rukus Solar costing $150 takes care of the solar devices heating problem by acquiring its audio over Bluetooth, letting you store your device safely in the shade — or in your pocket. Other features include an easy-to-grip handle, an E Ink display, the ability to run off AC or solar power, dual 2.25-inch speakers, and an aux-in jack.