The JL Master Series Jaeger-LeCoultre/410257J/42mm/alarm watch movement adopts Japanese 9015 movement quality guarantee for three years and zero repair. The Jaeger-LeCoultre Master 410257J series calendar watch has a very modern double-handle design. With smooth lines that are elegant yet sporty. Deep and elegant, yet extraordinary. [Case] ​​Watch size 42m/13.1m. The classic and capable case is polished by hand, brushed on the sides, polished on the edges, craftsmanship and process Xinjun is authentic, and the bottom cover is also engraved with Jaeger-LeCoultre style diving clothing and engraved patterns. [Strap Buckle] Natural rubber strap, thin, long and soft, enough to wrap around the wrist, matched with Jaeger-LeCoultre original buckle .Multifunctional mechanical watch,,