2 Set St. Patrick&rsquo;s Day Plastic Light-Up Shamrock Necklaces, LED Battery Included, Happy Saint Patrick Day Party Play Costume, Bar Decorative Seasonal Green Patty. Sold as Pack of 2. Batteries are Included. Lucky clover pendants will light up the night with Irish flair. Each large shamrock pendant comes on a 20" green metallic beaded necklace. With a simple press of a button the shamrock pendant blinks and lights up. The perfect accessory for St. Patricks Day parties, parades, concerts, restaurants and bars, resale, and more.