3 built-in rechargeable lithium batteries, energy-saving and environmental friendly. With USB interface and a provided cable, you can charge your electronics at any time you need. With the shape of a mushroom, the lamp body is very cute, unique, attractive, and easy-carrying. Dual use of illuminating and charging by only one mushroom light, it’s money-saving and practical. It can be widely used as table light, wall lamp, night light and portable power for indoor or outdoor use.