The 3 LED Cap Lights feature a unique built-in clip attachment that allows for hands-free use. The LED cap lights have a compact lightweight design and feature a under mounted slide switch for ease of use. The cap lights produce 10,000 mcd of light and have a 13 hour run time. Featuring 3 super bright 5MM LED's, the cap lights are available in traditional white LED or UV / black LED light illumination. The 3 LED Cap Lights come complete with batteries.