About This Watch: This Longines Saint-Imier Collection Watch L27525527 or L2.752.5.52.7 has an automatic chronograph, self winding movement with a date window. It features a black dial and a scratch resistant sapphire crystal. Its finely crafted 41 mm case is made out of 18k rose gold. This watch is water resistant up to 3 bars; 100 feet; 30 meters.