About This Watch: This Longines Heritage Watch L27474524 or L2.747.4.52.4 has an automatic chronograph, self winding movement with a day-date window. It features a black dial and a scratch resistant sapphire crystal. Its finely crafted 40 mm case is made out of stainless steel. This watch is water resistant up to 5 bars; 160 feet; 50 meters.