Our Flashing Multi-Color Musical Notes LED Blinkies make it easy to show off your love of music! Our light up musical note blinkies feature 5 LEDs, 2 red, 2 yellow and 1 green. Use the butterfly connector on the back of your musical note pins to attach them almost anywhere and watch the flashing fun begin. Please note the butterfly connector may create a small hole in the garment you attach it to. These light up musical note blinkies come with CR927 batteries included and installed and the batteries are replaceable. Our Flashing Multi-Color Musical Notes LED Blinkies are sold by the dozen and come individually packaged in a clam shell.