Already a legend within the OMEGA family, this OMEGA Constellation Globemaster Automatic Chronometer Men\'s Watch homes the brand\'s most advanced mechanical movement yet, setting new standards of style and quality. At A Glance  Presented on a grey leather strap 39mm case size with 100m water resistance Opaline silver \'Pie Pan\' dial with hard metal scratch proof fluted bezel Super-LumiNova filled hands and baton hour markers with date window at 6 o\'clock Scratch resistant sapphire crystal glass with anti-reflective treatment Anti-magnetic technology Powered by the OMEGA 8900 Swiss automatic movement Power reserve of 60 hours