The Longines Master Collection L2.738.4.51.7 is a sophisticated timepiece featuring a 41mm stainless steel case and a black dial adorned with Roman numerals. Powered by the automatic Longines caliber L707.2 movement, it offers a 48-hour power reserve and operates at a frequency of 28,800 vibrations per hour. The watch includes functions such as day-date display, moon phase, and chronograph complications. It is fitted with a black alligator leather strap and is water-resistant up to 30 meters. Reference number: L2.738.4.51.7.