This Omega is 39 mm 950 platinum case, transparent back set with an 18K white gold central Observatory medallion, fluted bezel, domed scratch-resistant sapphire crystal with anti-reflective treatment on both sides, grey dial, caliber 8913 self-winding Co-Axial master chronometer movement with date function, approximately 60 hours of power reserve, blue leather strap with 950 platinum stitching, foldover buckle. Water resistant to 100 m (330 ft).