This Omega is 43.5 mm sedna gold case with anti-magnetic properties and helium escape valve, transparent back, screw-in crown, unidirectional rotating blue ceramic bezel with Liquidmetal diving scale, domed scratch-resistant sapphire crystal with anti-reflective treatment on both sides, blue ceramic dial, caliber 8901 self-winding master co-axial chronometer movement with date window at the 3 o’clock, approximately 60 hours of power reserve, blue leather strap with rubber lining. Water resistant to 600 m (2000 ft).