Features: 100% brand new and high quality Specially designed for the vocational rider or casual cyclist Simple to use, long lasting, and safety attached Easy mount and release,installled in seconds before you get ready to ride Secure, remains securely locked in position, even during off-road use Durable and water resistant Be seen while riding your bicycle, this LED light is the perfect solution for night-time safety when biking. It's very beautiful when you install more than 2PCS on one wheel Specification: Item color: White 4 Light colors for choice: Red / Blue / Green or RGB 3 Modes: Flash, Fast flash, Keep light Material: silica gel Rated Voltage: 3V Power: 0.1W Luminous Flux: 20lm Power: 2x CR2016 battery or 1x CR2032 battery (Testing Battery Included Only, Please use your own batteries later) Package: 1 x Bicycle spoke light