Since 1993, the Seamaster has embraced its true famous ocean heritage. The OMEGA Seamaster Diver 300m Automatic Chronograph Men\'s Watch continues to do just that with its innovation and design. At A Glance  Presented on a black rubber strap 44mm case size with 300m water resistance Black unidirectional rotating ceramic bezel with diving scale Black dial featuring laser engraved waves and date window at 6 o\'clock Chronograph sub dials Hands and indexes filled with Super Lumi-Nova Screw down crown Ant-magnetic Scratch resistant sapphire crystal glass with anti-reflective treatment on both sides Powered by an automatic self-winding calibre OMEGA 9900 movement with co-axial escapement Power reserve of 60 hours