The Longines La Grande Classique L4.918.4.51.6 is a 38mm stainless steel watch featuring a sunray black dial with silver-tone hands and Roman numeral hour markers. Powered by the automatic Longines Caliber L591 movement, it offers a 45-hour power reserve. The watch includes a scratch-resistant sapphire crystal, a transparent case back, and is water-resistant up to 30 meters. It comes with a polished stainless steel bracelet secured by a deployment clasp with push-button and foldover mechanism. Reference number: L4.918.4.51.6.