Samgo Light-up Fiber Optic Led Hair Lights (14" Strands) Multicolor Hair Barrette Accessory (Blue) Uses two CR1220 replaceable batteries Packing: 1 x Hairpin SIZE:35CM Good for: party, bar, Disco, KTV, gatherings, activities, very brilliant Wear led hair lights under the hair so that only the lights are visibleRainbow Colors (Alternating Multicolors)