DescriptionThis product is the latest shining series.With a hairpin on it, you can easily clip in the hair. Especially during night, the optical fiber silk will be glowing which making you definitely different. It"s perfect for getting noticed at parties, concerts, clubs, home coming, and other special occasions!Our products are including the electronic so you can use it immediately.Let"s shake the party with shining hair now!LED Color: colorful Highlight:Colorful Flash Led Fiber Optic Light-up HairShining Decoration on Hair for party SpecificationColor: multi-colorBattery: 2 x CR2120 3v button battery How to use: 1. take off the pin in the back 2: attach it to hair with pin 3. turn on the switch, put the main part under your hair to hide it! How to change the batteries: 1. Slide the cover and take out from main part 2. take out the used batteries 3. be careful of "+" and "-"