Our glow in the dark clip on earring are perfect for parties and other events. Snap them and watch them illuminate for up to 6 hours. Gentle clip on earpiece is comfortable and perfect for kids and adults. To activate simply snap the micro glow stick and watch as the earring glows and produces it own light so it can be seen even in complete darkness with no prior bright light exposure like many other glow in the dark materials. Makes a great party favor!