Since 1993, the Seamaster Professional Diver 300M has enjoyed a legendary following. This 44 mm chronograph is a Numbered Edition model and is built from grade 2 titanium, 18K Sedna™ gold and tantalum, which can be found on the base of the bezel and the middle links of the bracelet.

The 18K Sedna™ gold bezel ring features a laser-ablated diving scale, while the polished blue ceramic [ZrO2] dial is distinguished by laser-ablated waves, a date window at 6 o’clock, and subdial rings with touches of 18K Sedna™ gold.

The side of each case includes an 18K Sedna™ gold plate engraved with each unique Numbered Edition number. Turning the watch over reveals an OMEGA Seahorse, which has been laser-engraved and lacquered white on the sapphire crystal. Through the glass, you can see the OMEGA Co-Axial Master Chronometer Calibre 9900, certified by the Swiss Federal Institute of Metrology (METAS).





  • Between lugs: 21 mm
  • Bracelet: Titanium ‑ Tantalum ‑ Sedna™ Gold
  • Case: Titanium ‑ Tantalum ‑ Sedna™ Gold
  • Case diameter: 44 mm
  • Dial colour: Blue
  • Crystal: Domed scratch‑resistant sapphire crystal with anti‑reflective treatment on both sides
  • Water resistance: 30 bar (300 metres / 1000 feet)

A Masterpiece in three materials

When tantalum made its OMEGA debut in 1993, it quickly earned a unique place in the Seamaster's deign history. This year, the lustrous material is making a stylish comeback.
Its distinctive blue/grey tones offering a subtle contrast to the precious metals features prominently on OMEGA's latest dive watch.

A closer look

  • Grade 2 Titanium
  • 18K Sedna Gold
  • Tantalum
  • Limited Edition


Calibre Omega 9900

Self-winding chronograph with column wheel and Co-Axial escapement. Certified Master Chronometer, approved by METAS, resistant to magentic fields reaching 15,000 gauss. Silcon balance-spring, 2 barrels mounted in series, time zone function. Central hour minute and chronograph second hands, small seconds hand, 12-hour and 60-minute recorders.
Rhodium plated finish with Geneva waves in arabesque.

60 Hour power reserve

Why Choose Emson Haig


How do you ship your product?

Our products are shipped with Royal Mail 1st Class

How fast do you deliver

We aim to deliver in 1-2 business days

What is your return policy?
Certified Dealership

Emson Haig is an OMEGA certified supplier and workshop, meaning we can provide an exceptional service directly from the store with our watch makers and experts at hand.

What is your warranty policy?

All OMEGA watches are delivered with a 5-year warranty that covers the repair of any material or manufacturing defects. Please refer to the operating instructions for specific information about the warranty conditions and restrictions.

Swiss Made

OMEGA is proud to include the Swiss Made mark on all of its watches. This simple wording guarantees a standard of quality that has been established over many centuries and is today a world-renowed symbol of excellence.

Every part of an OMEGA watch is made in Switzerland, which goes far beyond the industry's required standard. This means that the manufacturing levels as well as the aesthetic and technical levels meet Switzerland's highest demands.

On top of OMEGA's own proven excellence, the Swiss Made mark provides customers with even more assurance and trust in the watch they wear on their wrist.