About This Watch: This Longines Master Collection Watch L21285777 or L2.128.5.77.7 has an automatic, self winding movement with a date window. It features a silver dial with diamonds and a scratch resistant sapphire crystal. Its finely crafted 25.50 mm case is made out of 18k yellow gold and stainless steel. This watch is water resistant up to 3 bars; 100 feet; 30 meters.