Glovion LED Light Up Mardi Gras Bead Necklace for Party Favors, Pack of 2 - Green Light The material of Beads are Plastic ,each pack includes 2X bead necklaces (Note: Each necklace comes with 8 Led green lights ,the remaining beads are standard round Mardi Grad one) One button easily turn the light On &Off. Three Lighting Setting Mode : Quick Flash/Slow Flash/Constant on/Off An awesome party favor for children and Adults for family celebrations, bars, concerts,holiday birthdays Mardi Gras parties wearing Bead Necklace Length: approx 30" inch .Powered by 3xAG13 Batteries(Replaceable by screwdriver) 100% CUSTOMER SATISFACTION& MONEYBACK GUARANTEE; If, For Whatever Reason, you don't like them ,just contact us firstly.