These beautiful 8mm round cubic zircon stud earrings have LED lights behind each stone, and,when used with the button cell battery backs included, they emit a solid bright light. They areperfect for wearing to parties, clubs or events at night, or for wearing to work in the daytime, while turned off. The batteries are good for about 30 hours of wear, and replacement battery backsare available. These earrings are sure to make you noticed at parties and nightclubs. They make great gifts for friends and family. They are available in a variety of colors. These earrings are bright electric red in color, but we also have them available in red, pink, yellow, green, white, blue and purple, as well as in different size 6 to 12 mm.