The Longines Flagship Heritage Moonphase L48154922 presents a 38.50 mm stainless steel case and a sunray blue dial that reflects the classic styling of the original Flagship models from the late 1950s. The dial features applied indexes, polished hands and a moonphase display integrated at six with a date indicated by a small hand. A sapphire crystal with anti reflective coating on both sides covers the display. Powering the watch is the Longines Calibre L899, an automatic movement with a silicon balance spring, magnetic resistance and a power reserve of 72 Hours. The screw down case back carries the collection’s signature 18 carat gold medallion set with a hand painted enamel caravel. The watch measures 12.40 mm thick with a 46.30 mm lug to lug length and is fitted with a blue alligator leather strap secured by a folding clasp.