Thank you for viewing. This is a rare SEIKO military chronograph, model 7T27-7A40. This model is rarely seen on the market now and is a very difficult-to-obtain rare item. Due to its extremely low usage frequency, it maintains a surprisingly excellent condition for a vintage item. 【Thorough Maintenance and Product Condition】 This product has undergone the following special maintenance to maintain collection-grade quality. Extremely beautiful condition: There are no noticeable scratches on the windshield (glass surface) and the case body, and it is in very clean condition. It maintains an extremely good appearance, close to dead stock. Battery replaced: The battery was replaced with a new one in December 2025. It is running accurately, including the chronograph function. Exterior maintenance: The case has been carefully **polished**. The entire watch has been cleaned with alcohol disinfection, so you can use it cleanly. Waterproof measures: When the battery was replaced, waterproof silicone grease was applied to the rubber packing of the back cover to enhance the sealing. About the strap: The strap has been replaced with a new one. 【Details】 Brand: SEIKO / Seiko Model number: 7T27-7A40 Movement: Quartz (Chronograph) Color: Silver Accessories: None (body only) 【About Transactions】 Authenticity Guarantee: If it is found to be a fake or imitation, we will accept returns with a full refund. Please rest assured. Price negotiation: Significant price reductions are difficult for rare items, but it is possible to some extent. Please 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. 【Suggested hashtags】 #SEIKO #Seiko #Chronograph #7T27 #MilitaryWatch #VintageWatch #Rare #RareItem #ExcellentCondition #Maintained #BatteryReplaced #PriceNegotiable #Buyee