[New Battery / Functional / Wristwatch] Operation (including crown functions) has been verified. The watch is currently running and ready for use. ◆ Product Information [Brand] SEIKO [Model Number] 8420-0040 [Material] SGP30 / Stainless Steel Back [Dial] Gold [Movement] Quartz [Case Size] Approx. 23.3mm (excluding crown) [Weight] Approx. 23.5g [Lug Width] Approx. 1.2cm [Wrist Size / Max] Approx. 15.5cm [Accessories] None *Any included accessories are shown in the photos. ◆ Additional Information This is a vintage SEIKO EXCELINE manufactured in July 1981. It features an elegant design combining a gold dial with a subtle textured finish, slender bar indices, and two hands. With its slim, gold-tone round case and black cabochon-style crown, this timepiece captures the classic aesthetic typical of the early 1980s. The case back bears the engravings "SGP30" and "ST. STEEL BACK."