Omega Steel Estate Seamaster Diver 300 Wristwatch

Our Price: $5,750.00

Estate Omega · SKU: ESWB2801

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  • Omega Steel Estate Seamaster Diver 300 Wristwatch
  • The watch has a blue dial, blue bezel, chronometer, 44mm.
  • Completed by a steel bracelet
  • Box and papers, circa 2021

We offer free shipping and returns on orders $50+ within the continental US. If expedited shipping is required, please contact us directly at or 781.262.5854. Orders over $1,000 will require a signature upon delivery.

Most orders should be delivered within 3-7 days.

Store pickup is available on in-stock items, Tuesday - Saturday. For full details, please visit our Shipping or Returns pages.

Long’s ensures that all pre-owned timepieces are in good working order when sold and offers a two-year Limited Warranty at time of sale, subject to certain restrictions described below. In the event, that a modern pre-owned timepiece malfunctions during normal use, Long’s will be responsible for, and liability will be limited to, repairing or replacing damaged parts so that the timepiece is in good working order. All work and manner of work will be at Long’s discretion and the two-year warranty period is not extended if Long’s repairs or replaces the merchandise. The Limited Warranty does not cover damage due to water, shock, abuse, modifications, misuse or normal wear and tear. Any modifications of any kind, tampering or opening of the watch to expose the movement post-sale will void the Limited Warranty.

For vintage watches (currently noted as 1985 or older), Long’s provides a 30-day Vintage Limited Warranty that expects reasonable and careful treatment by the purchaser. Each watch will be in working condition at time of sale, though no confirmation of specific accuracy level or waterproofing can be provided. The distinction between vintage and other watches is due to parts not being as readily available and typically cannot be repaired. Long’s reserves the right to offer certain vintage watches and pocket watches with no warranty coverage, which will be communicated to the customer prior to and at time of sale in “as is” condition.


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Voted “Boston’s Best” Jeweler, our reputation spans over 140 years throughout New England and beyond.

Excellent Condition

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Every estate piece is fully inspected by our jewelry authenticators, allowing you peace of mind to purchase.

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We want you to love your purchase, so we offer easy returns and exchanges!

What Our Customers Are Saying

I’m very happy with my purchase. I really like the feature on your site that lets me try rings on virtually; it was really helpful. I would definitely shop with Long’s again.

- Alex. A

When the ring arrived, it was actually BETTER than the picture. I will definitely buy from them again.

- Greg J.

There is a wide selection, and the prices are really affordable for classic, one-of-a-kind pieces.

- Marie R.

This is the second time we have bought online from Long's. They carry more quality vintage or previously owned items that you can't find elsewhere. I especially like knowing that I am buying from a reputable dealer. And their shipping is very fast and very well packed.

- Kim S.

Not only is the quality of the jewelry excellent, but the helpfulness and knowledge of the staff is superb.

- Wendy L.