Specification AgeRangeDescription : Adult BatteriesIncluded : 1 BatteriesRequired : 1 Brand : HEMUDU BulletPoint1 : 【Seagull 1963 Mechanical Chronograph】: Vintage mechanical wristwatch, China's first pilot chronograph watch. Crafted with precision, offering accurate timekeeping, it embodies the classic military pilot style for men, allowing you to relive history. The 1963 mechanical chronograph watch is an essential choice for fashionable men. BulletPoint2 : 【Classic ST1901 Movement】:Original ST1901 manually-wound mechanical movement, operates without the need for a battery. It inherits the complex structure and functionality of the Venus 175 movement, including features such as a chronograph and timer. With manual winding, it provides a power reserve of approximately 40 hours. Operating at a frequency of 21,600 v.p.h, utilizing 21 jewels to enhance stability, reduce friction, and prolong the lifespan of the movement. BulletPoint3 : 【Luminous Waterproof Function】: HD luminous, depending on the light source absorbed, the time can be read clearly even in dark places. Strong pressure depth waterproof 30M, suitable for daily life waterproof, such as washing hands, rain and other scenes. Not recommended for swimming and snorkeling, please do not press any button underwater. BulletPoint4 : 【Daily & Gift】:Suitable for men to wear in daily life, dating and meeting, also a preferred gift for graduation, birthday, wedding, father's day, Christmas, Thanksgiving, Halloween and Valentine's Day; suitable for daily use, collection and gift. BulletPoint5 : 【Customer Service】: HEMUDU is committed to providing you with excellent service. Your satisfaction is our priority. Each watch undergoes rigorous quality inspection before leaving the factory. If you encounter any issues while using the watch, please tell us. Our dedicated customer service team will assist you and provide a response. CalendarType : No Calendar ClaspType : Buckle Color : 40MM-Sapphire-luminous Department : unisex-adult Department1 : Unisex-adult Department2 : womens Designer : Charles Raymond ExternallyAssignedProductIdentifier : 4954628245151 ExternallyAssignedProductIdentifier1 : 194595024364 ExternallyAssignedProductIdentifier2 : 0194595024364 ImportDesignation : Imported IncludedComponents : nylon strap, leather strap, watch face with ST1901 movement, transparent back cover ItemName : HEMUDU Mechanical Wristwatch for Men 1963 Chronograph Watch ST1901 Movement 38mm 40mm Sapphire Stainless Steel Case Pilot Military Hand-Wound Luminous Watches ItemPackageDimensions_Height : 12.7 centimeters ItemPackageDimensions_Length : 8.509 centimeters ItemPackageDimensions_Width : 9.906 centimeters ItemPackageQuantity : 1 ItemShape : Round ItemTypeKeyword : watches Manufacturer : HEMUDU ModelName : 1963 ModelNumber : 1963 NumberOfBands : 1 PartNumber : 1963 PowerSourceType : Mechanical ProductDescription : 【Parameter Movement】Original 40mm seagull 1963 watch, Chinese first pilot military manual mechanical chronograph, uses the technically mature ST1901 caliber, produced at the famous Tianjin Watch Factory in China, which succeeds and develops the VENUS 175 caliber, now widely used in watch manufacturing. Column wheel technology is applied to this movement for a more complex structure and overall stability. 21 jewels are used to enhance stability. The gooseneck fine-tuner makes the timekeeping more precise and reduces friction on the movement, increasing its life. The watch mirror is made of 9 Mohs hardness sapphire crystal, which is hard, anti-glare, scratch-resistant and drop-resistant, and the high transparency realizes easy reading of the watch. The watch bezel is made of 316L stainless steel, which has excellent corrosion, wear and oxidation resistance; it is highly polished and has a good luster. Both the nylon strap and the complimentary leather strap are skin-friendly and comfortable. The gold-colored scale numerals, champagne-colored dial and red five-pointed star are full of vintage design. The transparent back cover allows you to admire the delicate structure of the movement and to observe it in action. 30M water resistant. The field watch has a big dial with hour and minute hands to show the time, and a small seconds dial with a second hand to move the seconds. The long seconds hand and 30-minute chronograph subdial provide you with a chronograph function to use as a stopwatch. With its practicality, decoration and collectability, it is really a nice choice for gift-giving. ProductSiteLaunchDate : 2023-02-21T01:26:22.747Z SafetyDataSheetUrl : https://cdn.shopify.com/s/files/1/0878/3890/files/M85527711-2019.pdf SeriesNumber : 1963 Size : 7.5 inches SpecialSizeType : NO SIZE SportType : Walking SportType1 : Running SportType2 : Climbing StrapType : Bracelet Style : vintage SubjectCharacter : Men SupplierDeclaredDgHzRegulation : not_applicable SupplierDeclaredHasProductIdentifierExemption : 1 TargetGender : male Theme : vintage UnspscCode : 54111501 WarrantyType : Limited WatchMovementType : Mechanical Hand Wind WaterResistanceDepth : 30 meters WaterResistanceLevel : water_resistant