Seamaster Diver 300M Co-Axial Master Chronometer 42 mm

Seamaster Diver 300M — Steel & Sedna™ Gold

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 18K Sedna™ gold, and includes a blue ceramic bezel with a Ceragold™ diving scale. The dial is also polished blue ceramic and features laser-engraved waves and a date window at 6 o'clock.

The skeleton hands and raised indexes are 18K Sedna™ gold 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 and 18K Sedna™ gold bracelet and is driven by the OMEGA Master Chronometer Calibre 8800, which can be seen through the sapphire-crystal on the wave-edged caseback.

Technical Specifications

• Reference: 210.20.42.20.03.002
• Case Diameter: 42 mm
• Case: Steel – Sedna™ Gold
• Dial Colour: Blue
• Crystal: Domed scratch-resistant sapphire crystal with anti-reflective treatment on both sides
• Water Resistance: 30 bar (300 metres / 1000 feet)
• Lug-to-lug: 49.90 mm
• Thickness: 13.56 mm
• Between Lugs: 20 mm
• Total Weight (approx.): 204 g

Movement

• Calibre: OMEGA 8800
• Type: Self-winding with Co-Axial escapement
• Power Reserve: 55 hours
• Frequency: 3.5 Hz
• Certification: Master Chronometer Certified by METAS — resistant to magnetic fields up to 15,000 gauss

Bracelet

• Material: Steel – Sedna™ Gold
• Clasp: Foldover clasp with comfort setting and diver extension

Key Features

• Anti-magnetic (resistant to fields greater than 1.5 tesla / 15,000 gauss)
• Master Chronometer Certified — 0/+6 seconds per day precision
• Date display at 6 o'clock
• Helium escape valve (conical design)
• Screw-in crown
• Unidirectional rotating bezel
• Transparent sapphire caseback
• 5-Year Warranty
• Swiss Made

Key Materials

• Sedna™ Gold: OMEGA's exclusive 18K rose gold alloy with copper and palladium, offering outstanding resistance to colour fading over time.
• Stainless Steel: 316L stainless steel — corrosion-resistant and high-lustre after polishing.
• Ceramic: Blue ceramic bezel and dial — scratch-resistant, hypoallergenic, and non-magnetic.
• Sapphire Crystal: Synthetic sapphire graded 9 on the Mohs scale — virtually scratch-proof with anti-reflective coating.