Omega Planet Ocean 600M Co-Axial Master Chronometer Watch - 39.5 mm Steel Case - Unidirectional Blue Cermaic Bezel - Blue Dial - 215.30.40.20.03.001 Dark and the pinnacle of horological

and the pinnacle of horological craftsmanship

matching stamps on caseback

Calibre 3120 self-winding movement with hours

Rolex calibre 3235 perpetual self-winding movement with date at 3 o'clock that changes instantaneously at midnight in a few thousandths of a second

Omega Planet Ocean 600M Co-Axial Master Chronometer Watch - 39.5 mm Steel Case - Unidirectional Blue Cermaic Bezel - Blue Dial - 215.30.40.20.03.001 Dark and the pinnacle of horological39. 5 mm stainless steel case with helium escape valve, transparent screw in back, screw in crown, unidirectional rotating blue cermaic bezel with Liquidmetal diving scale, domed scratch resistant sapphire crystal with anti reflective treatment on both sides, blue dial with Arabic numerals and a date window at the 3 oclock, caliber 8800 self winding Co Axial chronometer movement with date function, approximately 55 hours of power reserve, stainless