The Longines La Grande Classique L4.918.4.51.2 is a men's watch featuring a 38mm stainless steel case with a thickness of 8.1mm. It houses the automatic Longines Caliber L591 movement, offering a power reserve of approximately 45 hours. The black dial is adorned with silver-tone hands and Roman numeral hour markers. A scratch-resistant sapphire crystal protects the dial, and the watch is water-resistant up to 30 meters. It is paired with a black alligator leather strap secured by a tang buckle. Reference number: L4.918.4.51.2.