- Brand: SOUND MASTER - Cable Type: Wired Thank you for viewing. This item was stored at my parents' house for a long time, but I've never seen it used. It was kept in good condition, but I cleaned it again. It's a Showa-era retro item, but it doesn't seem to have any major scratches or significant deterioration, and I've made an effort to keep it clean. Please check the photos. If you have any questions, I can post photos of specific areas upon request. I apologize that the model number is unknown because there is no box or instruction manual. If you don't mind the long-term home storage, please consider it. Showa Retro Audio Headphones