Attract attention and create a festive atmosphere at any event with our 27" LED light-up necklace, the coolest electronic necklace out there! Seven function flashing LED lights change patterns in a rainbow array of colors around the clear plastic necklace for nonstop fun. High visibility! Great for concerts, fundraisers, spirit nights and more. Also makes a fantastic party favor for birthdays, weddings and other special occasions. Batteries included and installed.