You will definitely have the luck of the Irish wearing this light-up, over-sized LED Shamrock Bead Necklace. Bright green LED lights dance on the reflective metallic green surface of the giant, surprisingly thick shamrock medallion. Have fun with four (4) distinct light modes (off/on, steady flash, fast flash, and slow flash) with the simple push of a button on the back. Each enormous 4.5" x 4.75" green light-up shamrock comes hanging from a 33" long string of green plastic party beads, and (3) replaceable AG13 batteries are conveniently included and installed. This costume jewelry accessory is perfect for pub crawls on St. Patrick's Day, celebrating Irish pride, Halloween, theme parties, and if you just want to get lucky.