Introducing the Jaeger-LeCoultre Master Calendar Steel Meteorite Dial 39mm ref. Q1558421, a harmonious blend of sophistication and functionality. This watch features a 39mm stainless steel case with a striking grey meteorite dial, offering a unique texture and depth. The dial displays a comprehensive set of functions, including hours, minutes, seconds, date, day, month, and moonphase, all enhanced by luminescent index and Arabic numeral markers for easy readability. Protected by a scratch-resistant sapphire crystal, the watch combines durability with elegance. Powered by the self-winding Calibre 866 movement, it provides a reliable 43-hour power reserve and is water-resistant up to 50 meters, making it suitable for daily wear. The black alligator leather strap, secured by a stainless steel pin buckle, adds a touch of refinement. Launched in 2015, the Master Calendar exemplifies Jaeger-LeCoultre's commitment to innovation and craftsmanship, making it an essential piece for any watch enthusiast.