Photo of the actual watch in stock

Omega Seamaster Diver 300M Blue Dial Automatic Men's Watch

Item No. WP23540
Mint: The watch is "like new", looks unworn, and is in perfect condition—as close to new as possible. Learn more
  • Checkmark original Omega double box, booklets and matching pictograms, chronometer & warranty card
  • Checkmark Max wrist size: 7.75" wrist
  • Checkmark Professionally inspected and packaged
  • Checkmark Risk free 30-day money back guarantee
  • Checkmark 12-month hassle-free warranty
Free overnight delivery and free returns. Learn more
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Omega Seamaster Diver 300M Blue Dial Automatic Men's Watch

This pre-owned Omega Seamaster Diver 300M is in mint condition and comes with: original Omega double box, booklets and matching pictograms, chronometer & warranty card. Max wrist size: 7.75 in.

This watch has passed all of our rigorous quality control tests for authenticity, performance, accuracy and condition by our team of Swiss watchmakers using cutting edge technology and the most modern equipment. The watch is 100% Certified Authentic and comes backed by our Signature Watches 12-month warranty. All photos are of the actual watch in stock.


Stainless steel case with a rubber strap. Uni-directional rotating stainless steel with a blue ceramic top ring bezel. Blue dial with luminous rhodium-plated skeleton hands and luminous dot hour markers. Dial type: analog. Luminescent hands & hour markers. Omega calibre 8800 automatic movement with about 55 of power reserve. Scratch resistant sapphire crystal. Screw down crown. Transparent case back. Case size: 42 mm. Case thickness: 13.7 mm. Round case shape. Band width: mm. Tang buckle clasp. Water resistant at 300 meters / 1000 feet. Functions: date, hour, minute, second, co-axial escapement, chronometer. Omega Seamaster Diver 300M Blue Dial Automatic Men's Watch.

About Omega

Omega makes some of the world’s most popular Swiss luxury watches with icons such as the Speedmaster, the Seamaster, and the Constellation under its belt. In 1848, Louis Brandt founded a watchmaking workshop in La Chaux-de-Fonds, which would eventually become Omega. The company’s name is actually taken from a groundbreaking watch movement that Louis Brandt’s sons, Louis-Paul and César made in 1894—the Omega Caliber.

From the outset, the Brandt family was committed to manufacturing precise and accurate timekeeping instruments. This was particularly evident in 1931 when Omega set si... Read more →

  • Item No. WP23540
  • Brand Omega
  • Model Name Seamaster Diver 300M
  • Model Number
  • Box Yes
  • Papers Yes
  • Gender Men's
  • Movement Automatic
  • Engine Omega Calibre 8800
  • Power Reserve 55
  • Max Wrist Size 7.75 in
  • Case Size 42 mm
  • Case Thickness 13.7 mm
  • Case Material Stainless Steel
  • Case Shape Round
  • Case Back Transparent
  • Dial Type Analog
  • Dial Color Blue
  • Crystal Scratch Resistant Sapphire
  • Hands Luminous Rhodium-plated Skeleton
  • Dial Markers Luminous Dot
  • Second Markers Minute Markers around the outer rim
  • Luminiscence Hands & Hour markers
  • Bezel Uni-directional Rotating
  • Bezel Color Silver-tone
  • Bezel Material Stainless Steel with a Blue Ceramic Top Ring
  • Crown Screw Down
  • Water Resistance 300 meters / 1000 feet
  • Functions Date, Hour, Minute, Second, Co-Axial Escapement, Chronometer
  • Features Stainless Steel; Rubber; Ceramic; Chronometer; Analog; strap
  • Band Type Strap
  • Band Material Rubber
  • Band Width 20
  • Clasp Tang buckle

Buyer Protection Guarantee

Luxury time pieces are a significant investment. At Signature Watches, we believe that the process of buying a luxury watch should be a joyful and memorable experience, not a stressful one. That is why every watch listed on our site comes with our Buyer Protection Guarantee, which includes our Authenticity Guarantee, 30 day risk-free returns, and 1 year hassle-free warranty, providing you with ultimate peace of mind.

Authenticity Guarantee

Our strict authentication procedures guarantee we only list authentic watches. Every watch sold on our site goes through some of the most rigorous authentication and verification processes in the industry. Watches are inspected for authenticity, performance and condition by an experienced team of Swiss watchmakers using cutting edge technology and the most modern equipment.

Simply put, every watch we sell is 100% certified authentic, and we are so sure of our authentication process that we offer a 110% money back guarantee if your watch is not authentic. This means you receive a full refund, plus an additional 10% of your purchase price.

Our 1-Year Warranty

Each watch listed on our site come with our 1 year hassle-free warranty which you can use up to 12 months following your purchase. If a watch we sell to you should fail as a result of a defect at any time during the initial 12 months from date of purchase, we will repair or replace the item at absolutely no cost to you!

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At Signature Watches we pride ourselves on providing our customers with world class customer service. For that reason, when you buy a watch from us we include free, insured, next day shipping for all watches sent within the United States (unless otherwise noted). The order cutoff for next day shipping is 1 PM ET Monday – Friday, excluding holidays.

Once payment has been verified, your watch will be shipped fully insured for the purchase price of the watch. In order to protect your purchase, a signature is required for the package to be delivered.

How long after I place my order does my watch get shipped out?

We typically ship your watch within 2-4 business days after your order has been approved. This varies from watch to watch and will be clearly detailed on the product page.

What shipping company do you use?

Fedex is our exclusive shipping service provider.

Can I track my order?

Of course! you will receive a tracking number via email once your watch gets shipped.

Are you able to ship my watch to a PO Box?

Our insurance provider will not cover a watch that gets shipped to a PO Box. Therefore, We can not ship watches to a PO Box at this time.

How much does shipping cost?

Your shipping is free! We provide free overnight shipping on all US based orders.

Can I place an order if I live outside the US?

We are able to ship to most countries all over the world. If you do not see your country during checkout it means we can not ship there. Please note that international orders may be subject to customs charges, import taxes, VAT and/or other additional fees. These additional charges are covered by you, the buyer. We cannot declare any item as a gift or reduce its stated value in order to decrease additional charges, that is against the law.

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If you are not satisfied with your purchase for any reason, you may exchange or return it for a refund (excluding shipping and handling charges) within 30 days from shipping from our warehouse.

Prior to shipping the watch back you will need to contact us by email and request a RMA (return merchandise authorization) number for your return.You will then get a fully insured shipping label from us so you can send the watch back.

The refund will be issued within 2-3 business days in the same manner payment was originally sent and after a successful inspection by our watchmakers.

As long as the safety seal is not broken and the watch is in the same condition it was shipped out to you with all accessories (boxes, tags, booklets & papers) and received in our office within 30 days from the day it was delivered to you then a full refund will be issued.

If the seal is broken or tampered with or if the watch is not in the same condition it was shipped out then a 15% restocking fee will be deducted from your refund amount.

Read more about returns →

Frequently Asked Questions

How do you determine your prices?

In short, supply and demand is what dictates our prices. We use thousands of market data points to determine our prices. Hard statistics and dry facts is what determines our pricing - real world, factual data.

Are your watches 100% authentic?

We take great pride in our authentication process. Every watch sold on our site has gone through some of the most rigorous authentication and verification processes in the industry. Your watch is inspected for authenticity, performance and condition by an experienced team of Swiss watchmakers using cutting edge technology and the most modern equipment. Simply put, every watch we sell is 100% certified authentic.

How can I get in touch with you?

Our hours of operation are M-F: 8am -8pm EST / Sat- Sun: 9am-5pm EST. You can get in touch with us by phone: (888) 660-7868 or email: If we do not pick up the phone when you call it means we are busy with previous callers. Please leave a message and we will get back to you as soon as possible. Emails and calls left after business hours will be returned the following business day.

Is it safe to make such a large purchase online?

Absolutely. We use industry leading, military grade encryption on all of our checkout pages. We never store your credit card information and in fact never even see it. Checking out online is much safer than giving your card details over the phone or handing your credit card to a sales rep in a brick and mortar location.

Where do your watches come from?

Our watches come from individuals who have sold us their watch through our website. Once we receive a watch we rigorously test it for authenticity, performance and accuracy. If a watch passes all of our inspections it then gets professionally serviced, packaged, and listed for sale on our site. We also have partnerships with some of the leading, most reputable wholesalers in the US and occasionally buy watches from them as well.

Will I get the watch’s original packaging and paperwork?

We try to provide the original box and papers for each watch we sell. However, because all of our watches are pre-owned by individuals, we can not guarantee the original box and papers for each watch we sell. Whether or not a watch for sale does or does not have the original box and papers will be clearly stated on the product page. Regardless of the box and papers, all of our watches are 100% authentic and have passed a multitude of authenticity verification procedures.

Will my watch have the manufacturers warranty?

If a manufacturer warranty is attached to your watch then it will always belong to the watch itself. Some manufacturer warranties belong to an individual and then the warranty does not transfer ownership. Regardless if manufacturer warranty, every single one of our watches listed for sale comes with the Signature Watches one year warranty. You can rest easy knowing our team is always here to service your watch.

Are all of your sales prices final?

Due to the dynamic nature of market supply and demand our prices fluctuate on an ongoing basis. We have included a “make an offer” feature for each one of our watches for sale. If a watch’s listed price is out of your reach, you can always try to make an offer and see if we can match it. This is of course not guaranteed, but definitely worth a shot if a particular desired watch’s listed price is out of your budget.

Will I get a discount if I pay with a wire transfer or check?

Yes, paying via wire transfer or check gives you a 3% discount off of the listed price. Once the funds clear we ship out your watch.

What payment options do you offer?

You can pay by credit card, PayPal, wire transfer or check. Paying by wire transfer or check grants you a 3% discount off the listed price. We also have financing options available which allow you to spread out payments onto 12, 24 or 36 months with very low rates. You can read more about our financing options here.

Buy With Confidence

All of our watches are backed by our buyer protection guarantee providing you a stress-free shopping experience.

  • Checkmark Certified Authentic

    Our watches are certified authentic and undergo rigorous authentication processes.

  • Checkmark 100% Risk Free

    If you don’t absolutely love your watch when you receive it, you can return it to us free of charge within 30 days.

  • Checkmark 1-Year Warranty

    Each watch listed on our site comes with a 1-year hassle-free warranty.

Service Package
  • Checkmark
    Free Expedited Shipping

    You paid enough for your watch, shipping is on us anywhere in the US!

  • Checkmark
    Free Returns and Exchanges

    If you're not happy, we're not happy. Try out your watch for 30 days risk-free.

  • Checkmark
    Fully Insured Delivery

    Rest easy knowing your watch is fully insured during delivery.