Since 1993, the OMEGA Seamaster Professional Diver 300M has enjoyed a legendary following. Today’s modern collection has embraced that famous ocean heritage and updated it with OMEGA’s best innovation and design. This 42 mm model is crafted from stainless steel and includes a green ceramic bezel with a white enamel diving scale. The dial is also polished green ceramic and features laser-engraved waves and a date window at 6 o’clock. The skeleton hands and raised indexes are rhodium-plated and are filled with white Super-LumiNova, while the helium escape valve has been given a conical design. The watch is presented on an adjustable stainless steel bracelet with extra diver extension, and is driven by the OMEGA Master Chronometer Calibre 8800, which can be seen through the sapphire-crystal on the wave-edged caseback.<ul><li>42mm stainless steel case</li><li>Green dial</li><li>Domed scratch-resistant sapphire crystal with anti-reflective treatment on both sides</li><li>Anti-magnetic</li><li>Date</li><li>Helium escape valve</li><li>Screw-in crown</li><li>Unidirectional rotating bezel</li><li>OMEGA Master Chronometer Calibre 8800 self-winding movement</li><li>Master Chronometer Certified</li><li>55 Hour power reserve</li><li>Transparent case back</li><li>Stainless steel bracelet</li><li>Water resistance: 30 bar (300 metres / 1000 feet)</li><li>OMEGA Style #: O21030422010001</li></ul>