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Omega Planet Ocean 600 M Omega Co-axial Master Chronometer Chronograph Watch - 45.5 mm Steel Case
The difference between Swiss grade and Asian grade watches lies in the material of the case used as well as the movement. Asian grade watches use 316L steel while Swiss grade watches are made with 904L steel which is more durable and rust and corrosion resistant. Swiss grade watches are made with replica machinery to match Swiss technology and standards so higher precision and finishing can be expected.
45.5 mm stainless steel case with anti-magnetic properties and helium escape valve, transparent back, screw-in crown, unidirectional rotating black ceramic bezel with orange rubber and Liquidmetal diving scale, scratch-resistant sapphire crystal, black ceramic dial with Arabic numerals and a date window at the 6 o’clock position, small seconds sub-dial, as well as 60-minute and 12-hour counters on one dial, caliber Omega 9900 self-winding Co-Axial master chronometer movement with chronograph function, approximately 60 hours of power reserve, black structured rubber strap with orange stitching and lining. Water resistant to 600 m (2000 ft).