Steel ‑ Sedna™ Gold on 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 black ceramic bezel with a Ceragold™ 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 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.
The movement is unaffected by exposure to strong magnetic fields, even those greater than 1.5 tesla (15,000 gauss).
Label given to a watch which has undergone precision tests and received a certificate from an official body (COSC).
The day of the month, displayed in a window on a watch dial at the 3 or 6 o’clock position, or within a subdial at 9 o'clock.
Helium escape valve
Decompression system which allows helium to escape from inside the watch when the watch is worn for professional use in pressure chambers. (Long-term underwater work, crude oil exploration, etc.)
Master Chronometer Certified
Guaranteeing the Swiss industry’s highest standard of precision, performance and magnetic-resistance, as set by the Swiss Federal Institute of Metrology (METAS).
Self-locking crown, screwed into the tube of the case, used for highly water resistant divers' watches.
Transparent case back
A transparent case back - frequently made of sapphire - makes it possible to see the movement inside the watch.
Unidirectional rotating bezel
A bezel which turns in only one direction. Particularly useful for divers who cannot accidentally rotate it in the wrong direction, which could cause them to miscalculate their dive times. A rotating bezel makes it easy to measure elapsed time.
OMEGA is proud to include the Swiss Made mark on all of its watches. This simple wording guarantees a standard of quality established over many centuries and is a world-renowned symbol of excellence.
Every OMEGA watch is warranted for a period of sixty (60) months. It covers material and manufacturing defects existing at the time of delivery. During the warranty period and by presenting the valid warranty certificate, you will have the right to have any defect repaired free of charge. This includes the repair or replacement of any spare parts and/or rectifying any faults as identified by our Customer Service. In the event that repairs are unable to restore the normal conditions of use of your OMEGA watch, OMEGA guarantees its replacement by an OMEGA watch of identical or similar characteristics. The warranty does not cover normal wear and tear or damage caused by accidents or negligence. The warranty is rendered void if work is carried out on the watch by persons who are not authorised to do so by OMEGA.
OMEGA pays attention to online security.
We take the privacy and security of your payment and personal details very seriously. We use SSL encryption technology for online transactions to protect your card information.
The following methods of payment are available: VISA, AMEX, MASTERCARD, DISCOVER, UNION PAY, PAYPAL AND AFFIRM.
OMEGA processes payments via Datatrans.
Most orders are processed within an hour of credit card approval. If a band adjustment is needed please allow an additional 2-3 Business Days for the watch to be serviced. Orders placed after 12pm EST, may not ship until the following business day. Orders placed on Saturday and Sunday will be processed on the next business day. Orders placed on an official holiday will be processed on the following business day. Signature will be required for all orders.
We want you to enjoy your item as soon as possible, therefore all orders will receive complimentary 2nd Day express shipping unless otherwise noted. Orders approved Monday through Friday by 12 PM Eastern Standard Time will have same day shipment. Orders approved after the aforementioned times will be processed the next business day.
OMEGA will gladly ship to the 48 contiguous states as well as Washington D.C., Alaska and Hawaii. For clients in Puerto Rico, please contact your local boutique. We are unable to ship to PO Boxes.
Customer satisfaction is our goal. If you are not satisfied with your product, you may return any unworn, undamaged merchandise purchased online from www.omegawatches.com/en-us/ by mail within 14 days of delivery for a refund of the purchase price, provided that the merchandise is original quality and has not been damaged. Returns are only applicable to orders made on www.omegawatches.com/en-us/. Returns are not accepted in the boutiques. Earrings are final sale and may not be returned or exchanged.
Any order that fails quality inspection from Customer Service (e.g. scratches, worn, damaged) will be returned to you and no refund will be issued. Any products that are personalized (embossed, engraved, etc.) cannot be cancelled after purchase. We reserve the right to reject personalized items without providing reason. Personalized, engraved or embossed products cannot be returned.
To request a return, please visit your MyOMEGA account to print out your return label. Let us know why you are returning your item by completing the survey on the back of the packing slip and returning it with your merchandise. The item must be returned with box, warranty cards, user manual, gifts with purchase (if applicable), and any extra links due to bracelet sizing. In order to expedite your return, you must choose the appropriate reason code for your return on the packing slip. Carefully package merchandise to prevent damage in transit.
We recommend that all returns and exchanges be sent by UPS or FedEx with a valid tracking number attached. We are not responsible for items which are lost, stolen, broken, or damaged during the return process. All refunds will be issued in the form of the original payment.
Return Your Package To:
Swatch Group (U.S) Inc.
C/O – Omega Ecommerce Division
55 Metro Way, Suite 1
Secaucus , NJ 07094
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OMEGA has been using the exclusive 18K SednaTM Gold, its own fiery rose gold alloy, since 2012. Named after Sedna, an orbiting planetoid that has been described as one of the reddest in the solar system, SednaTM Gold not only bears all the standard characteristics of other 18K golds, but it also offers high resistance to the fading of colour and lustre over time. Its unique composition includes copper and palladium for colour and stability.
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Stainless steel is certainly the most conventional of watchmaking materials for outer craftsmanship, and offers beauty, strength and affordability. OMEGA uses 316L stainless steel. Known for its corrosion-resistance and high lustre after polishing, this material is often the ideal choice for watches in both daily-use and high-stress situations such as diving and adventure.
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OMEGA has unrivalled expertise in the use of ceramics, dating back more than 10 years. Taking its origin from the Greek word "keramos", ceramic is an inorganic, non-metallic substance obtained by firing at high temperatures. It allows the creation of completely dense watch parts with exceptional mechanical properties. Ceramic is one of the most popular choices for customers when selecting their timepiece, thanks to its appealing colour range and specific properties, such as it being two times lighter than stainless steel, hardwearing, highly scratch-resistant, chemically inert, hypoallergenic, environmentally friendly and non-magnetic.
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To really appreciate the finer details of a timepiece, OMEGA uses synthetic sapphire crystal with a highly scratch-resistant and anti-reflective treatment. Before the machining and finishing processes take place, the sapphire crystals are produced under the Verneuil process, also called flame fusion. It involves the melting of the raw substance using oxyhydrogen flame and the crystallisation of the melted droplets to form a cylinder. Graded 9 on the Mohs-hardness scale (graded 1-10), the resulting sapphire crystals are virtually scratch-proof and very hard, ensuring an unhindered vision at all times.
Your watch and strap should go together perfectly, but that doesn't mean you can't experiment with different combinations. Why not mix things up and see what happens? You may discover a look that's as individual as you are.
Find your perfect Strap
Configure your Strap
of this watch
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Master Chronometer Certified
Twice as precise as any officially certified chronometer
Our Master Chronometer watches are tested and certified twice. Firstly, the movement is tested by the Official Swiss Chronometer Control (COSC) with precision criteria of 0/+6 seconds per day. Then the complete watch and its movement undergo eight Master Chronometer tests set by the Swiss Federal Institute of Metrology (METAS) with criteria of %3/%4 seconds per day.
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Master Chronometer Certified
Proprietary anti-magnetic materials
Everyday items such as mobile phones, metal clasps on handbags, laptops, MRI, induction hobs or automatic doors; subject a watch to magnetic fields and can affect its performance for good. To prevent the risk of permanent deviations of up to several minutes a day we've conceived movements with antimagnetic materials, such as the silicone balance spring, capable of withstanding the highest fields.
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Master Chronometer Certified
To ensure the integrity of our timepieces at depth, not just some but all watches are fully immersed in water and pressure is applied up to the point of the guaranteed water resistance. By submerging each watch in water we have chosen – yet again - to exceed normal testing standards.
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Our watches are engineered to the highest standards and certified as such. Each watch destined to become a Master Chronometer must first pass 8 stringent tests. The examinations we perform for precision, magnetic-resistance, power reserve and water-resistance allow us to cover the certified watches with a comprehensive 5-year warranty.
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Extended service intervals
Each Master Chronometer is equipped with a Co-Axial escapement, conceived to reduce the mechanical constraints inside the movement. This significantly reduces the need for lubrication and hence the need for servicing. All mechanical movements need to be serviced periodically, but an OMEGA Master Chronometer offers more time between servicing than many other watches.
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A selection of test watches face shock-resistance examinations that are equivalent to 5,000 g (1 g is equal to the force of gravity at the Earth's surface) to ensure our complex mechanical mechanisms are also extraordinarily robust. Not just for everyday use but for active sports such as golf and sailing.
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.
Get the latest edition of our official Omega catalogue "The Collection".