[Introduction] This Seiko Kinetic Auto Relay wristwatch presents a highly technical layout combined with exceptional daily utility. Featuring a clean silver sunburst dial with sleek silver-tone indices and hands, it offers a sophisticated, modern appearance. Driven by Seiko's advanced Kinetic technology, it harnesses the movement of the wearer to generate electrical energy, delivering the precision of quartz without the need for traditional battery changes. [Historical & Collector Value] Belonging to Seiko's famous family of eco-forward engineering, the Kinetic Auto Relay represents a landmark achievement from the late 1990s and early 2000s. The specialized 5J21 caliber features a smart power-saving function that puts the watch into a "sleep" mode when inactive, automatically "waking up" and resetting to the correct time once handled again. This innovative bridge between mechanical movement and high-tech power reserve management makes it a highly appealing piece for collectors who appreciate milestone Japanese electronic watchmaking. Specifications ◇Brand: Seiko ◇Model: Kinetic Auto Relay ◇Reference: 5J21-0A10 ◇Case size: 37 mm ◇Movement: Kinetic (Automatic Quartz) ◇Case material: Stainless Steel ◇Dial: Silver ◇Bracelet / Strap: Black Leather Strap ◇Clasp: Buckle ◇Water resistance: 10 bar ◇Country of manufacture: Japan ・Condition Clean overall condition with light signs of age and normal wear. The stainless steel case displays minor surface micro-scratches from handling, while the black leather strap is well-preserved with light creasing, maintaining a highly professional presentation. ・Service History The watch has been checked for basic operation and is functioning with movement exposure at the time of listing. As with any pre-owned watch, future maintenance or capacitor inspection may be required depending on usage and the buyer’s standards. ・Shipping & Customs The item will be carefully packed and shipped securely from Japan. International shipping is fully available. Please note that any customs duties, import taxes, or local fees are the responsibility of the buyer.