Proud of their partnership with Neckton, a not-for-profit research foundation committed to the protection and management of the world’s oceans, this OMEGA Seamaster Diver 300m celebrates the brand’s deep connection to the sea. At A Glance  Presented on a stainless steel bracelet 42mm stainless steel case with titanium uni-directional rotating bezel and 300m water resistance Domed scratch resistant sapphire crystal with anti-reflective coating on both sides Black ceramic dial with luminous hour markers Helium escape valve Anti-magnetic. Protected against magnetic fields greater than 1.5 tesla Powered by the OMEGA Co-Axial Master Chronometer Calibre 8806 automatic self-winding movement 55 hours power reserve