Discover Jaeger-LeCoultre's precision with the Master (ref. 1422521), an elegant watch engineered for daily versatility and long-term reliability. From profile to crystal, the architecture convinces: crafted in pink gold and measuring 39 mm in diameter, defined by a round silhouette. The caseback is open, and the crystal is sapphire, delivering water resistance to 5000 meters. Up close, the dial rewards inspection: a silver tone, executed in meteorite, framed by mixed hour markers, and dauphine hands. Inside, precision takes center stage: the 939A/1 caliber. Introduced in 2015. Designed for real-world wear, the watch transitions smoothly from tailored looks to casual settings. Manufacturing tolerances and surface treatment highlight consistent quality control. For buyers researching specifications and real-world impressions, this reference stands out for coherent design, dependable mechanics, and lasting relevance within modern horology.