The Seamaster collection was first introduced over 60 years ago when it was designed especially for divers. Having received a complete upgrade with an enhanced form, the OMEGA Seamaster 300m Co-Axial Chronometer Men’s Watch is now ready for a new generation of adventurers. At A Glance Presented on an ergonomic stainless steel bracelet41mm stainless steel case with a water resistance of 300mBlack dial with Super-LumiNova hour markers, open numerals and handsUnidirectional rotating bezelDomed scratch resistant sapphire crystal glass with anti-reflective treatment insideTransparent case backMaster chronometer certified OMEGA Co-Axial Master Chronometer Calibre 8912 automatic movement with up to 60 hour power reserve