Illuminated discs that really workWeighed down by their batteries, most light-up discs fly like rocks. The FlashFlight looks, feels and flies like high-performance, non-illuminated discs. Its ultra-bright L.E.D. shines brightly from any angle, and the replaceable batteries last for 15 hours on the Disc-O. Made by Nite Ize, it's durable, waterproof and floats. 8" diameter. 120-grams. Very groovy, the Disc-O Jr. is smaller and softer for kids and changes colors in flight.