One size can fit all most adults with adjustable strap
Powered by AAA*2 batteries(not included),4~6 hours battery life time.
The LED (EL) sound activated light up Bow tie animation lighting is controlled by built-in sensor, when music comes, LED lingt up.
This LED glow in the dark bow tie lighting up by music or sound,good for rave, party, disco, hiphop, concert, costumes for man and women, even walking on the street.
Widely used for Weddings , Concerts , Party Show , Halloween, Costume Parties, Masquerades, Mardi Gras, Rave Festivals, Carnivals, Christmas Gifts, and more