Turn in your beads for lights. Light up your Mardi Gras celebration with a disco twist. Our light-up LED Mardi Gras Disco Ball Necklace is a party must-have for the disco dancing diva and a Fat Tuesday dance floor giveaway. Each necklace has a 28" long cord and features bright white LED's within the purple, green and gold plastic disco balls and with each click of the on/off button choose from 6 different light settings. 3 AG13 Batteries are included & installed and are replaceable.