Experience the craft of Jaeger-LeCoultre in the Master (ref. 1612403), a refined timepiece that blends thoughtful design with reliable performance. A study in proportion and durability: crafted in pink gold and measuring 40 mm in diameter, with a thickness of 12.8 mm, defined by a round silhouette, paired with a gem-set bezel. The caseback is closed, and the crystal is sapphire, delivering water resistance to 5000 meters. The dial composition is deliberate and legible: a silver tone with sunburst finish, framed by mixed hour markers, and dauphine hands. Beneath the caseback lies dependable performance: the 876-440B caliber. Comfort and balance define the wearing experience, making it an easy daily companion. Subtle transitions between textures elevate the overall impression. For buyers researching specifications and real-world impressions, this reference stands out for coherent design, dependable mechanics, and lasting relevance within modern horology.