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. Packing:RioRand Set of 10 LED Fiber Optic Lights up Hair Alternating Multicolor Flash Barrette Clip Braid for New Years Eve Party.