I made a keychain out of an MD disc♪ It reflects a shimmering rainbow color depending on how the light hits it. It's become a stylish item with a retro feel. Since the disc isn't completely fixed, it makes a cute rattling sound. As it's made into a keychain, purchasing it for playback purposes carries a risk. Please refrain from doing so. It is a one-of-a-kind item m(_ _)m Please understand that this is a reused item and may have fine scratches. I have other MD keychains for sale, so please take a look. Height: Approximately 68 mm Width: Approximately 71 mm Thickness: Approximately 4 mm