This is a 2010 Nite Ize Flashlight Frenzy Light Up LED/Fiberoptic Flying Disc. It is in new condition, never thrown, with original packaging. The disc is unpigmented disc which weighs in at a reported 185 grams. The outer structure has very clean, efficient lines. The underside of the disc houses a small two battery (3 volt DL2016) compartment in the center of the disc, along with nine radially oriented fiberoptic splines. The LEDs are motion activated in flight, moving through six different colors. This is probably the most serious and effective attempt at manufacturing an electronic light-up flying saucer that I know of, a process that dates back to the early 1970s. This tech has also been incorporated into a golf disc format as well, but this particular model is more suited to nighttime throw and catch. Thanks for looking!