Black Kitty Cats are wonderful creatures the whole year round, and especially great for a spooky night out on the town! Creepy cat, magical cat, meow's galore! These necklaces are great for Halloween parties, trick-or-treating, costumes, party favors, and so much more!To activate your Black Kitty Cat Halloween Eyes Necklace, remove pull tab and press the button, located on the back of the battery housing. Black Cat Necklaces come with 2 replaceable CR927 Batteries. Specifications: Necklace Length: 23" Pendant: 2" x 1.75" LED Colors: Jade, Purple