Philips TAA6219 Solar Powered Self Charging Over Ear Bluetooth Headphones – Free Gift RRP £15!Powerfoyle by Exeger. More light, more power From sunlight to electric light, these headphones recharge whenever they're exposed to light! Powerfoyle solar cell material in the headband harvests energy from the sun to keep the battery powered upand you'll even get a charge from electric light. A fully charged battery provides up to 80 hours of play time, so you can keep going even in low light. Cool and comfy on ear fit for active lifestyles Run,