About This Watch: This Longines Master Collection Watch L21284786 or L2.128.4.78.6 has an automatic, self winding movement with a date window. It features a silver dial and a scratch resistant sapphire crystal. Its finely crafted 25.50 mm case is made out of and stainless steel. This watch is water resistant up to 3 bars; 100 feet; 30 meters.