OMEGA Seamaster Diver 300M 42MM Stainless Steel Ref. 210.30.42.20.01.018 Full Set 2025

The OMEGA Seamaster Diver 300M is one of the brand's most recognisable professional dive watches, combining OMEGA's established diving heritage with modern Master Chronometer technology. This 42mm example is presented in stainless steel with a distinctive black dial and black aluminium unidirectional rotating bezel.

The black dial features rhodium-plated skeletonised hands and indexes filled with white Super-LumiNova for clear legibility. Orange detailing is applied to the central seconds hand, quarter-hour markers and Seamaster wording, adding contrast to the otherwise monochrome design.

Powering the watch is OMEGA's Co-Axial Master Chronometer Calibre 8806 automatic movement. The movement is METAS-certified, resistant to magnetic fields of more than 15,000 gauss and provides approximately 55 hours of power reserve. It can be viewed through the transparent sapphire crystal caseback.

The watch is fitted with its original stainless steel bracelet and folding clasp. A domed sapphire crystal with anti-reflective treatment protects the dial, while the screw-in crown and helium escape valve contribute to the watch's professional diving specification.

With 300 metres / 1,000 feet of water resistance, the Seamaster Diver 300M is designed as a capable professional dive watch while remaining equally suited to everyday wear. This example dates to 2025 and is supplied as a full set.

Watch Details

• Brand: OMEGA

• Collection: Seamaster

• Model: Diver 300M Co-Axial Master Chronometer

• Reference: 210.30.42.20.01.018

• Year: 2025

• Case Size: 42mm

• Case Material: Stainless Steel

• Bezel: Black anodised aluminium, unidirectional rotating

• Dial: Black

• Hands & Markers: Rhodium-plated skeletonised hands and indexes with Super-LumiNova

• Movement: OMEGA Co-Axial Master Chronometer Calibre 8806

• Movement Type: Automatic

• Power Reserve: Approximately 55 hours

• Functions: Hours, minutes, seconds and date

• Crystal: Domed sapphire crystal with anti-reflective treatment

• Caseback: Transparent sapphire crystal

• Bracelet: Stainless Steel

• Clasp: Stainless Steel Folding Clasp

• Helium Escape Valve: Yes

• Water Resistance: 300 metres / 1,000 feet

• Full Set: Yes

Condition & Accessories

The watch is presented in good pre-owned condition, with signs of wear consistent with previous ownership.

• Original OMEGA box

• OMEGA warranty card

• Full set

• Year: 2025

Condition: Good Pre-Owned Condition

International Shipping Disclaimer

International buyers are responsible for any customs duties, import taxes, VAT, brokerage fees and other charges imposed by the destination country.

We are not responsible for customs delays, additional charges, or items held by customs. If a shipment is refused or returned, any return shipping costs, customs charges or associated fees remain the responsibility of the buyer.

Buyers are responsible for ensuring that the purchase complies with all applicable import regulations and local laws in their country of residence.