You're sure to be the star of any night time event when you wear our mirrored 4" plastic Blue Star LED Fusion Badge Necklace. Each unique star shape badge comes on a 34" black lanyard that features smiley faces and the word "smile" on it. Our Blue Star LED Fusion Badge features 3 bright LEDs in red, blue and green. By clicking the on/off button you can also choose from a variety of color modes. There are 2 - CR2032 batteries included and installed.