From the ManufacturerOur Skylighter Disc has bright LED"s that light up the entire disc. Watch as it spins, it has a "lighthouse" effect. Batteries are long lasting and are replaceable. The Skylighter features durable construction that resists damage from rough surfaces. The low profile is perfect for long distance flights, the soft, contoured rubber edge enhances the grip and assures soft catches. Great for players of all skill levels! Product Description"Where"d you get that sweet light-up disc thing?" You"d better get used to answering questions like this. The Aerobie Skylighter is a fun outdoor toy during the day and visibly spectacular come dusk or night. Powerful LEDs light up the top and upper rim of the Skylighter disk. The result is a very bright disk that looks surreal as coasts on air toward you. With a broad 12 inch span and nicely weighted streamlined design, throwing a Skylighter disk is effortless and catching one is a breeze too. Soft edges, extreme precision, unbelievable throwing distances. Long life, replaceable batteries.Ages 10+ Play safely by throwing in a clear space to an alert catcher.