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 caseback.

Gender	Man
Brand	Omega
Model No	210.30.42.20.01.001
Movement	Self winding
Case Diameter	42 mm
Case Thickness	13.6 mm
Lugs Width	20 mm
Crystal	Domed scratch‑resistant sapphire crystal with anti‑reflective treatment on both sides
Case Material	Stainless steel
Dial	Black
Water Resistance	Water-resistant to 30 bar
Strap Material	Steel
Clasp	Foldover clasp with comfort setting and diver extension
Movement Type	Self winding
Calibre	Calibre Omega 8800
Calibre Descriptions	Self-winding movement with Co-Axial escapement. Certified Master Chronometer, approved by METAS, resistant to magnetic fields reaching 15,000 gauss. Free sprung-balance with silicon balance spring, automatic winding in both directions. Rhodium plated finish with Geneva waves in arabesque.
Power Reserve	55 hours
Features	Anti‑magnetic Chronometer Date Helium escape valve Master Chronometer Certified Screw‑in crown Transparent case back Unidirectional rotating bezel
What's Inside Box	1x Omega Seamaster 42 - 210.30.42.20.01.001 Co‑Axial Diver Black Dial Steel Strap 1x Original Omega Box 1x Warranty Card 1x Instructions / Manual Book