Manufacturer: SEIKO Model: 4206-5700 Movement: Automatic (with manual winding function) Dial Color: Black Case Color: Silver Case Size: 36mm x 29mm (excluding crown) Wrist Size: 21cm Lug Width: 16mm Belt: Original, as released Daily Rate: +10 to -25 seconds Accessories: None (watch only) There are individual differences in how the appearance is perceived, so I've marked it as "Slightly scratched or dirty" to prevent any issues, but I think it's just minor scratches from daily use. Also, considering it's a 50-year-old watch, it's very clean and in quite good condition. Setting the time, date, and day of the week via the crown operation is not a problem. Winding the mainspring by shaking the watch and manual winding are also not a problem. The daily rate changes slightly depending on temperature and position, so please consider it as a guideline. During the final check before listing, it was -7 seconds when laid flat. It's traded online for around 40,000 to 50,000 yen, but the details of the watches online, such as the daily rate and crown operation, are unknown. (Photos ⑥, ⑦) Good condition examples are not often available on the market, so I think this is a very valuable watch. Below are the official Seiko instruction manual and the features of this item. 【Instruction Manual】 https://www.seikowatches.com/jp-ja/-/media/Files/Common/Seiko/instructions/Japanese/4/4206/4206.pdf 【Features of this item】 This item is a "Seiko Five" series released by Japan's world-renowned "SEIKO" around the 1970s. The "Five Series" represents five functions: automatic winding, date, day of the week, water resistance, and shock resistance. It is said to be a masterpiece that made Seiko's name known worldwide during Japan's period of rapid economic growth from the 1960s to the 70s, and it is a popular series that continues to be manufactured even now with improvements. This item is a boy-sized dress watch, which is not often seen in the Five series. The dial is a black dial. Gold indexes and luminous hands with a luxurious feel. Day-date design at the 3 o'clock position. The case is a TV-shaped square form. This is a must-have item for those who are looking for a unique Japanese antique.