【Also available on Mercari Shops - Get a 20% discount coupon by following the shop. #nekoneko → Filter → Seller → Shop (Mercari Shops) to go to Nekoneko-do's Mercari shop】 Also selling vintage and antique watches. → #nekoneko *Please read the description and profile before purchasing. ●Product Name: SEIKO 5 SPORTS Speed-Timer UFO Made in Japan 6138-0011 Automatic Winding Genuine SS Belt 1971 SS Case Screw Back ●Case Width: Approx. 42mm (excluding crown) Lug Width: Approx. 18mm Wrist Size: Approx. 18cm (Please allow for some error) ●This is a vintage chronograph, the SEIKO 5 SPORTS Sports Timer "Ref. 6138-0011" manufactured in 1971. It is called "Big Double" or "UFO" because of its curved and voluminous case design. The dial is a matte black dial. The red and orange accents are a 70s-like design. The calendar is a domestic specification with two languages: Japanese and English. ●As it is a 53-year-old vintage watch, there are minor scratches on the exterior, but there is no damage that affects wearing or visibility. The engraving on the back cover remains intact. Please check the photos. The belt is a genuine stainless steel belt with a "SEIKO 5 SPORTS" engraved buckle. ●Before listing, I checked the operation, and it is running well when the watch is shaken and wound. The daily difference measured by the timegrapher is -3 seconds to +7 seconds in a flat position, which is very good. (The daily difference may vary depending on the posture change, temperature, winding condition, etc., so please consider it as a reference) The stopwatch button and reset button are the type that can be pressed firmly and work properly. ●There may be scratches and stains that cannot be fully captured in the photos. Also, the evaluation of the item is my subjective opinion, so there may be individual differences. Please refer to the description and photos and consider purchasing. ●Shipping will be done as quickly as possible and with careful packaging.