Seiko Dolce 7731-5210 Operation confirmed. Fully functional. New battery replaced, and basic cleaning done. New belt replaced! Based on the serial number, it appears to be a 1986 model. Please check the condition in the images. Case size is approximately 24.5mm, belt width 18mm. Currently, this is the only one listed on the flea market site, so if you want it, please don't delay. 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 haven't performed detailed checks, so please understand. I want you to be as satisfied as possible, so I check as much as I can, but it is sold as-is. I cannot provide any compensation for accidents, damage, malfunctions, or defects after shipping or after receipt, so please refrain from purchasing if you have any concerns. *The display stand, etc., used in the photos are not included. Instant purchase and silent transactions are also given a "good rating," so please feel free to purchase. Thank you for your understanding. Search words: Quartz, stylish, antique, vintage, North American style, gold watch, leather belt, rubber belt, contemporary art, vintage, retro, stainless steel, divers watch, study, exam, outdoor, camping, simple, chic, formal, entrance ceremony, graduation ceremony, dress, chronograph, men's, women's, wristwatch, Showa retro, Heisei retro, art, design, art, fashion, Taisho modern