Thank you for viewing. This is a vintage SEIKO quartz wristwatch, model 5931-7030. This model features a simple round case and an elegant gold tone. The dial has Roman numeral indexes, giving it a classic and elegant impression. This item is old, but the following special maintenance has been performed to enhance its operational reliability and cleanliness: * **Battery Replacement:** The battery was replaced with a new one in December 2025 and is currently working correctly. * **Exterior Maintenance:** The case has been carefully polished to restore its luster, and the entire watch has been disinfected with alcohol. * **Strap Replacement:** The band has been replaced with a new leather strap (※ using a belt that matches the model in the photo). * **Water Resistance:** During battery replacement, **silicone grease was applied to the rubber gasket (O-ring) on the back cover** to reduce the risk of water and moisture intrusion. (※ This is only a supplement to daily life water resistance and does not guarantee complete water resistance.) Condition: Although it is a used vintage item, there are no noticeable major scratches or dents, and the condition is relatively good. Please check the condition thoroughly in the photos. The back cover is marked "SGP BACK ST. STEEL". 【Details】 Brand: SEIKO / Seiko Model Number/Movement: 5931-7030 / Quartz (Battery-powered) Case Material: SGP BACK ST. STEEL (Gold-plated / Stainless steel back cover) Color: Gold tone / New strap (brown etc.) Accessories: None (Watch only) 【About Transactions】 Authenticity Guarantee: If it is determined to be a fake or imitation, we will accept returns and provide a full refund. Please rest assured. Price Negotiation: Price negotiations are also possible. Please feel free to let us know your desired price in the comments section. 【For International Buyers】 This product can be purchased from overseas by using purchasing agent services such as Buyee, ZenMarket, and From Japan. Thank you for your consideration. \#SEIKO \#Seiko \#VintageWatch \#Quartz \#5931 \#NewStrap \#PriceNegotiable \#Buyee