The Longines Flagship Heritage Moonphase L4.815.4.92.2 is a stainless steel watch featuring a 38.5 mm case and a sunray blue dial. It is powered by the automatic Longines Caliber L899 movement, offering a power reserve of approximately 72 hours. The watch includes a moon phase complication and a date display at the 6 o'clock position. It is fitted with a blue alligator leather strap and is water-resistant up to 3 bar (30 meters).