Seiko Quartz 6431-5050, gold-tone color. Operation confirmed. Fully functional. New battery replaced, simple cleaning done. New strap replaced! (20mm) Based on the serial number, it appears to be a 1982 model. Please check the condition in the images. There are fine scratches overall, but I don't think there are any noticeable scratches on the crystal. Case size is approximately 30mm, lug width 19mm. This is a rare model, so please consider purchasing it early if you are interested. If you like it, please give it a "like"! I would also appreciate it if you would follow me! Regarding items with confirmed operation, I have checked the basic functions, but I have not performed detailed checks, so please understand. I want you to be as satisfied as possible, so I check as much as I can, but please understand that it is sold as-is. Returns are not accepted due to customer circumstances. If you feel any anxiety about the condition, please refrain from purchasing. *The display stand, etc., used in the photos are not included. Immediate purchase and silent transactions are also given a "good rating," so please rest assured. Thank you for your understanding. Please purchase if you agree to the above. Search words: Quartz, stylish, antique, vintage, North American style, gold watch, leather strap, rubber strap, contemporary art, vintage, retro, stainless steel, divers watch, study, exam, outdoor, camping, simple, chic, formal events, entrance ceremony, graduation ceremony, dress, chronograph, men's, women's, wristwatch, Showa retro, Heisei retro, art, design, art, fashion, Taisho modern