Package Includes: 1Pcs/2Pcs Bicycle Wheel LED Light Lamp Specifications: 3 Kinds of switch : Full light, Fast flash, Flash Power :CR2016 batteries (included) Light color :Red, blue, green, colorful Quantity：1pcs Features: -This bicycle safety light will help you make your visible on the road. -Be seen while riding your bicycle, this LED light is the perfect solution for night-time safety when biking. -Brand new, high quality, small, lightweight, long life. -Specially designed for the vocational rider or casual cyclist. -Simple to use, long lasting, and safety attached. -Easy mount and release , installed in seconds before you get ready to ride. -Secure, remains securely locked in position, even during off-road use -Waterproof, shockproof.