Discover Jaeger-LeCoultre's precision with the Master Ultra Thin (ref. Q13224E2), a contemporary classic shaped by careful watchmaking know-how. The exterior is thoughtfully executed: crafted in pink gold and measuring 40 mm in diameter, with a thickness of 11.3 mm, defined by a round silhouette. The caseback is open, and the crystal is sapphire, delivering water resistance to 5000 meters. At a glance, the dial balances texture and clarity: a grey tone with guilloche finish, executed in enamel, framed by stick / dot hour markers, and dauphine hands. At its heart beats a proven engine: the 978F caliber. Issued as a limited edition, appealing to focused collectors. Introduced in 2025. With considered ergonomics, it feels composed during extended wear. Brushed and polished elements play with light to emphasize crisp geometry. For buyers researching specifications and real-world impressions, this reference stands out for coherent design, dependable mechanics, and lasting relevance within modern horology.