A dramatic and enduring design which is made even more luxurious with its 18ct Sedna Gold case, this OMEGA Constellation Master Chronometer really is a watch of a lifetime. At A Glance  Presented on a blue leather strap 41mm 18ct Sedna Gold case with blue ceramic bezel and 50m water resistance Domed scratch resistant sapphire crystal with anti-reflective coating on both sides Blue sun-brushed dial with 18ct Sedna Gold baton hour markers Date window at 6 o’clock Anti-magnetic. Protected against magnetic fields greater than 1.5 tesla Powered by the OMEGA Co-Axial Master Chronometer Calibre 8901 automatic self-winding movement 60 hours power reserve