Spread some of the Irish luck around with our Flashing Shamrock LED Blinkies! Each of our pins lights up with 3 high-powered green LEDs that will light your way all night long! Attach your flashing light pin to your clothing with the butterfly connector. Please note butterfly connectors may leave a small hole in the garment you attach it to. Comes with two CR927 batteries that are included, attached, and replaceable. Our Flashing Shamrock LED Blinkies are sold by the dozen and come individually packaged in a clam shell.