Longines HydroConquest Automatic Chronograph watch, model L3.783.4.96.6. Features a stainless steel case with ceramic bracelet and blue dial featuring silver-tone hands and Arabic numeral/index markers on the outer rim with minute gradation, plus three sub-dials displaying date, 12 hours and 30 minutes functions. Equipped with automatic chronograph movement (Caliber L688), scratch-resistant sapphire crystal, unidirectional rotating ceramic bezel, screw-in crown for safety, round case measuring 41mm in diameter, solid case back, water resistant up to 300 meters/990 feet.