Vintage Seiko Spirit AGS Titanium men’s wristwatch, reference 4M21-0B50. This model features Seiko’s early AGS (Automatic Generating System) technology, the predecessor of the later Seiko Kinetic system. Unlike a conventional battery-powered quartz watch, the AGS system generates electrical energy through the movement of the wearer’s wrist and stores it in a rechargeable power cell. The watch is powered by the Seiko Cal. 4M21 self-charging quartz movement and features a power reserve indicator operated by the push button at approximately the 2 o’clock position. The rechargeable power cell was replaced in October 2026, and the watch is currently running. The champagne/cream textured dial features applied gold-tone baton hour markers and matching hands, giving the watch a simple and elegant appearance. The dial is signed: SEIKO AGS SPIRIT TITANIUM The case measures approximately 36.3 mm across, excluding the crown. The watch is fitted with a lightweight titanium bracelet suitable for a wrist of approximately 17.5 cm. The case back is marked: SEIKO WATER RESISTANT 10BAR TITANIUM ALLOY * TITANIUM + ST. STEEL 4M21-0B50 Serial number: 690397. Based on the serial number and known production period of the 4M21 movement, the watch is estimated to date from approximately 1996. The watch shows normal signs of previous use, including scratches, scuffs and surface marks on the case, case back and bracelet. Please carefully review all photographs, as they form an important part of the description and accurately show the cosmetic condition of the watch. No original box, papers or warranty are included. This is an interesting vintage Seiko featuring the early AGS self-generating quartz system, lightweight titanium construction and classic Spirit design. ⸻ Shipping & Customs Policy For items with a final auction price of €250 or less, shipping will generally be carried out via Japan Post ePacket Light (registered airmail). The estimated delivery time for ePacket Light is approximately 2–3 weeks, depending on the destination country and customs clearance process. For items sold for over €250, shipping will be upgraded to DHL Express to ensure faster delivery, improved tracking, and enhanced security. Due to changes in customs procedures, Japan Post shipping is temporarily unavailable for items valued at less than €150 sent to the following EU countries: Austria, Denmark, Germany, Finland, France, Belgium, Portugal, Luxembourg, and the Czech Republic. For these shipments, we will make a special arrangement to ship via DHL Express instead. Please note that any customs duties, import taxes, VAT, or other charges imposed by the destination country, as well as any customs clearance or handling fees charged by the carrier, are the responsibility of the buyer. These charges are not included in the item price or shipping cost. This also applies to shipments sent via DHL Express under the special arrangement described above. Customs regulations vary by country, so please check with your local customs office before bidding. The item will be declared at the full final auction price. Undervaluation or marking the item as a gift is not possible. All items are carefully packed, shipped from Japan, and provided with tracking information.