Since 1993, the 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 black ceramic bezel with a white enamel diving scale. The dial is also polished black 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 a stainless steel bracelet and is driven by the OMEGA Master Chronometer Calibre 8800, which can be seen through the sapphire-crystal on the wave-edged case back. FEATURES Anti‐magnetic The movement is unaffected by exposure to strong magnetic fields, even those greater than 1.5 tesla (15,000 gauss). Chronometer Date Helium escape valve Screw‐in crown Transparent case back Unidirectional rotating bezel TECHNICAL DATA Between lugs: 20 mm Bracelet: steel Case: Steel Case diameter: 42 mm Dial color: Black Crystal: Domed scratch‐resistant sapphire crystal with anti‐reflective treatment on both sides Water resistance: 30 bar (300 metres / 1000 feet)