IWC IW501902 (shortened as 501902) is a discontinued military-style automatic watch from the Big Pilot’s Watch TOP GUN Miramar collection, crafted to pay tribute to the US Miramar Fighter Weapons School. Measuring 48.6 mm in diameter with a 14.9 mm thickness, it features a scratch-resistant black ceramic-titanium composite case, paired with IWC’s iconic fluted screw-down onion crown and double anti-reflective curved sapphire crystal. A soft-iron inner cage delivers robust anti-magnetic protection, while 60m water resistance suits daily commuting and outdoor activities. The matte anthracite instrument-style dial is fitted with luminous beige hour markers and sword-shaped hands, surrounded by red minute tracks replicating aircraft cockpit gauges. A 7-day power reserve subdial sits at 3 o’clock, a large date window at 6 o’clock, and central hacking hours/minutes hands for instant accurate time reading, delivering striking military aesthetics. It runs on the proprietary Cal.51111 self-winding movement composed of 311 components with 42 jewels. Equipped with a Breguet hairspring and Glucydur balance wheel, it oscillates at 21600 vph, and twin mainspring barrels deliver a full 168-hour 7-day power reserve. All bridges are finished with hand-executed Côtes de Genève, concealed by a solid titanium caseback. It comes factory-equipped with a military green heavy-duty textile strap and matching ceramic-titanium tang buckle for lightweight comfortable wear. Combining rugged military design, long in-house power reserve and professional anti-magnetic performance, this discontinued model has limited surviving stock and steady pre-owned market value, standing as a highly collectible TOP GUN variant within IWC’s Big Pilot lineup. 万国 IW501902（简称 501902）属于大型飞行员 TOP GUN 米拉玛系列军旅自动机械男表，现已停产，是致敬美军米拉玛飞行学校的硬核军表代表作­。表径 48.6mm、厚度 14.9mm，采用黑色陶瓷复合钛金属表壳，耐磨抗刮；标志性洋葱头旋入式表冠，双­面防眩凸型蓝宝石表镜，内置软铁内壳强力防磁，60 米生活防水，户外、通勤穿搭均可驾驭。 炭灰色复古仪表盘表盘搭配米色夜光时标与剑形指针，外圈红色分钟刻度还原战机仪表视­觉；3 点位设 7 日动力储备副盘，6 点位大日期窗口，中央停秒时针分针，读时清晰直观，军风辨识度拉满。搭载万国自产 Cal.51111 自动机芯，311 枚零件、42 颗宝石，宝玑游丝搭配铍合金摆轮，21600 次 / 时振频，双发条盒提供 168 小时七日超长动力，机芯饰日内瓦波纹手工打磨，密底钛合金后盖设计。 原厂军绿色耐磨织物表带配钛陶瓷针扣，轻量化佩戴无负重。整表融合军工硬朗外观、长­动力自产机芯与专业防磁配置，停产存世量有限，二级市场流通稳定，是万国大飞系列极具­收藏价值的 TOP GUN 限量风格军旅腕表。