Omega Seamaster Diver 300M Omega Co-Axial Master Chronometer - 42 mm Steel Case - White Dial - 210.30.42.20.04.001 Petite caliber 8520 self-winding movement with

caliber 8520 self-winding movement with chronometer and automatic winding in both directions to reduce winding time

New design introduced at Baselworld 2010

4 mm stainless steel and yellow gold case

4 mm stainless steel and 18K red gold case

31mm Everose Rolesor case comprised of Oystersteel and 18K Everose gold

Omega Seamaster Diver 300M Omega Co-Axial Master Chronometer - 42 mm Steel Case - White Dial - 210.30.42.20.04.001 Petite caliber 8520 self-winding movement with42 mm steel case with anti magnetic protection and helium escape valve, transparent back, black ceramic bezel, domed scratch resistant sapphire crystal with anti reflective treatment on both sides, white dial with laser engraved waves and Seamaster highlighted in red, Calibre Omega 8800 self winding co axial master chronometer movement with date, approximately 55 hours of power reserve, steel bracelet. Water resistant to 300 metres (1000 feet).