Bike Light - Super Bright Strap Release Design Bike Flash Light Kits Set for Front and Rear Bike light One-Touch Switch Design, Install or remove without any tools, Easy to use Kinds of Switch:Full light, Flash, Slow Flash ,Water Resistant Shower Proof Design. Mounts to Any Bike Quickly and Easily by Looping the Strong Silicone Loop around the Frame, and Hooking to the Light. Powered by 2 pcs CR2032 Batteries (included) Solid, Durable, Extend Strong. Up to 10,0000 Hour of LED Life.