Clip led flash braid in your hair, or on your clothes. Get noticed at bars, nightclubs, raves, proms, nighttime parties, or Burning Man. * approximately 80 fiber optic fibers cut at variable lengths from 5 inches to 14 inches long * Wear led hair lights under the hair so that only the lights are visible，Rainbow Colors (Alternating Multicolors)。 * Uses two CR1220 replaceable batteries(included),you can get them at most drug, electronic, or hardware stores. * include:10 pcs. 8 hour battery life,barrette size(1.6" x 1")