This is Waterproof Double LED Light with Silicone for Bicycle. It is new and high quality. It is simple and practical, easy to use. Convenient and effective. The bicycle light is easy to carry because of its lightweight, easy to install and take off from your bicycle. It can emit extremely brilliant LED light which lights up your world. Great choice for you! This light has 4 kinds of Switch: Full light, Flash, Slow Flash and off.