LED mask flashes as music step like equalizer. Perfect for Riding,Skating at night and Many Sports, Halloween, Costume Parties, Masquerades, Mardi Gras, Rave Festivals, Carnivals, Gifts, and more; Volume Sensing Technology Automatically Calibrates From concert Volume to conversation Volume. One Size Fits All. Adjustable the velcro of the side to fit your face; Takes 2AAA Batteries (NOT INCLUDED) ;It is light and easy to ware.
100% brand new and high quality.
High Quality Craftsmanship.
Make yourself cool and flashing in group.
Nice gift for your family and friends.
(Note : Rotate the wheel under the mask, then turn on the switch and voice your sound, the mask will glow.The higher sensitivity, the better induction effect it is)