Vintage Seiko “Unique” mechanical hand-wound wristwatch. Case diameter: approx. 26 mm (measured without crown, see photos). Bracelet: Stretch stainless steel bracelet (length adjustable by stretch; exact length not measured). Movement: Manual winding mechanical movement. The watch is currently running at the time of listing. The watch was tested running continuously for approximately 12 hours and showed no significant time deviation during this period. However, long-term accuracy and performance are not guaranteed. Condition: The watch shows visible signs of age and use. There are scratches on the case and bracelet, and aging / patina on the dial consistent with vintage condition. Please carefully review all photos for exact condition details. Service history: Service history is unknown. Materials: Stainless steel case and bracelet. No precious metals. Shipping: The watch will be shipped by registered and fully trackable shipping. Insurance can be arranged upon request depending on the final auction value. No original box, papers, or warranty included.