The Longines Master Collection Moonphase L2.919.4.97.6 is a 42mm stainless steel watch featuring a sunray blue dial adorned with 13 Top Wesselton VS-SI diamonds totaling 0.059 carats. It is powered by the automatic Caliber L899 movement, offering a 72-hour power reserve and operating at 25,200 vibrations per hour. The watch includes a moonphase display and a date indicator at the 6 o'clock position. Additional features comprise a scratch-resistant sapphire crystal, transparent case back, and water resistance up to 30 meters. The stainless steel bracelet is equipped with a triple safety folding clasp and push-piece opening mechanism. Reference number: L2.919.4.97.6.