Jaeger-LeCoultre/410257J/42mm/Alarm watch movement adopts Japanese 9015 movement quality guarantee for three years and zero repair. Jaeger-LeCoultre 410257J series calendar watch, JL has a very modern double handle design and elegant matching. Smooth lines without losing the sporty style. Deep and elegant, without losing the extraordinary. [Case] ​​The watch size is 42X13.1mm. The classic and capable case is polished by hand, with brushed sides and polished edges. The craftsmanship and process are consistent. Authentic, 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.