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