The Longines Flagship Heritage Moonphase L4.815.4.02.2 is a Swiss-made timepiece featuring a 38.5 mm stainless steel case and a sunray green dial. It is powered by the automatic L899.5 caliber movement, offering a 72-hour power reserve. The watch includes a moon phase display and a date function at the 6 o'clock position. It is fitted with a black alligator leather strap and is water-resistant up to 30 meters. Reference number: L4.815.4.02.2.