About This Watch: This Longines Heritage Watch L47974512 or L4.797.4.51.2 has an automatic, self winding movement with a retrograde day-date format. It features a black dial and a scratch resistant sapphire crystal. Its finely crafted 41 mm case is made out of stainless steel. This watch is water resistant up to 3 bars; 100 feet; 30 meters.