The classic diving model comes in a 45.5 mm steel case with rose gold inserts. The self-winding mechanism depends on the amplitude of the arm movement. This watch is designed specifically for diving, it can withstand deep water pressure and has a water resistance of 600 m. The dial is covered with a transparent anti-reflective glass made of high-strength sapphire crystal, which provides maximum protection against chipping and mechanical damage. Sapphire crystal is also used to make the back cover of the watch case, which provides an overview of the movement. It is made of genuine leather and rubber and comes with a folding gold clasp. The chronograph. The power reserve is up to 60 hours. The Omega 9900 caliber. The dial is blue. Transparent back cover