Omega - Seamaster Diver 300M Master Chronometer

Omega Seamaster Diver 300M Master Chronometer

Retail: $5,200 Model # 42mm New Our ID: OMG3734

Seamaster Diver 300M Master Chronometer :

Stainless Steel head and bracelet with push-button deployant clasp, unidirectional rotating blue ceramic diver bezel, silver / laser-engraved waves dial, automatic Master Chronometer (Cal. 8800), date, screw-down crown, display back, helium escape valve, anti-magnetic, WR 300m, Ref., 42mm, Retail = $5,200, New in Box with Papers + 2 Year BW Warranty

  • Width: 42 mm / Height: 50 mm / Thickness: 13.5 mm / Lug Width: 20 mm
    Reference #
    Size Men's (42 mm)
    Case Stainless Steel
    Band Stainless Steel
    Buckle push-button deployant clasp
    Dial silver / laser-engraved waves dial
    Hands blued / luminous skeleton hands
    Markers luminous markers
    Bezel unidirectional rotating blue ceramic diver bezel
    Features screw-down crown, display back, helium escape valve, anti-magnetic
    Crystal sapphire
    Water Resistance 300 meters
    Movement automatic Master Chronometer
    Functions date
    Calibre Omega 8800
    Width 42 mm
    Height 50 mm
    Thickness 13.5 mm
    Lug Width 20 mm
    Grade New
    Box Boxes Included
    Papers Papers Included
    Warranty 2-Year BW Warranty
    Alternate References 21030422006001

Terms and Policies

Terms of Sale (US Orders)

2021 Holiday Return Policy

Returns now accepted until January 6th, 2022 * On Eligible Items Only

  • Shipping fee is non-refundable.
  • Some watches may not be eligible due to availability at time of order.
  • Items over $4,500 are not eligible without prior approval. Email for more details.
  • This offer is only valid for watches purchased after November 26th.

If you plan on returning the watch, first let us know by calling 800-200-2724 or email:

To receive a full-refund of the watch price, the watch must be in the same condition it was received. Pack the watch carefully and include all packaging, manuals, and a copy of your invoice. Do not tape up the watch box or there will be a $50 charge. Send the watch in an expedited way, similar to the way you received it (i.e. 1 or 2 day service).

For watches received after January 6th, there will be a 10% to 20% restocking fee, which is at our discretion depending on the circumstances. If you have any questions or concerns, do not hesitate to contact us.

Return Policy

Each watch comes with a three-day return policy. The three days (business days) starts when you receive the watch.

Because of the volume of used watches we sell, we are not able to pick up every problem with each watch. We do try our best. If there is a problem with a watch, notify us within the three days. If you have any concerns about the authenticity, or the functions of the watch, this should also be taken care of in the three-day period.

Some of our unworn watches are shipped in their original protective factory plastic. Returns of those watches will be subject to a 10% to 20% restocking fee if that plastic is removed.  If you size and wear an unworn watch, the restocking fee will be at our discretion and may exceed 20%.

If you plan on returning the watch, you must send the watch back to us within three days of agreement to do so and in the condition it was received. Do not tape up the watch box or there will be a $50 charge. Send the watch in an expedited way, similar to the way you received it (i.e. 1, 2, 3 day service). If you exceed the three days there will be a 10% to 20% restocking fee, which is at our discretion depending on the circumstances. If you have any questions or concerns, do not hesitate to call us. We want to work with you to resolve any problems in an agreeable way.

Shipping is not refundable.


Most of our new (never worn) watches include a one-year warranty through Bernard Company. The warranty covers the actual workings of the time piece, as long as it has not been tampered with. This warranty excludes damage or wear to case parts such as the crystal, strap, bracelet, bezel, crown, pushers and battery. Watches with warranties are indicated by a "+BW Warranty" before the price listing. As indicated, the warranty is through Bernard Company. Since we are not authorized dealers for these watches, we can not supply the factory warranties.

Our used watches have a 90 day "good will" warranty.  We believe this gives plenty of time to realize any problem we may have missed beyond timing the watch on our timing machine. We like to keep our used watches priced competitively and the cost of warranting them for longer would result in higher prices...for a service most people don't ever use.  For your comfort, an optional one-year warranty is available on these pieces and is figured on an individual basis. Let us know if you would like this option.

Our warranty is available on-line for review.

Grading of Watches

A large percentage of our watches are brand new. They will state this by saying "New" or "Never Worn" before the price. If it doesn't state this, the watch has been used. All of our watches are in good shape unless noted otherwise. In order, the condition ratings go as follows. Never Worn (New) (100%)... Like New(97%)... Mint(95%)... Near Mint(90%)... Extra Fine(85%)... Very Fine (80%)... Fine(75%).

  • New/Never Worn: These watches have never been worn.   They are the same condition and generally have everything you would get as the ones you would buy from an authorized dealer who sells only new watches.
  • 99% Like New:  A very small number of watches fall into this category, this is sometimes used to describe new watches which have been returned or otherwise received a small amount of 'shop wear', other times they are trade-ins worn by very careful collectors.  This is the top grade we give.  These watches often have less wear on them than the new but shopworn watches you might find at your local authorized dealer.
  • Like New: These watches are generally trade-ins by an individual who wore the watch infrequently and gingerly. One has to look very closely to distinguish from new.
  • Mint: These watches were worn gently. There can be visible signs of wear on a watch in Mint condition, but it has been polished to remove most of the signs of wear and will present well on the wrist. Most of our customers are very pleasantly surprised at the condition of our Mint grading.
  • Near Mint: These watches were usually someone's daily wear for several years. They have been polished during their lifetime but they still look nice. There will be evidence that they have been polished. They may have slightly rounded edges, remnants of scratches or other imperfections. The bracelet may have lost some of its tightness and have slight sway side to side.
  • Very Fine: These watches are generally older or were worn roughly, there may be deep scratches or the bracelet may have significant stretch. We try not to buy watches that are in Fine condition. When referring to a strap alone, a Fine grade means that the strap is still serviceable, but has become stained or faded.
Water Resistance

Bernard Co. does not warranty the water resistance of pre-owned watches. There are simply too many variables outside of our control. If you plan to swim or dive with your watch, have it pressure tested locally beforehand.

Shipping Rates (US Orders)

Insurance is included on all packages shipped in the US. An adult signature is required for all packages. We use flat shipping rates for domestic orders.

Shipping for Pre-Owned Watches

  • FedEx Two Day: $40
  • FedEx Priority Overnight: $60
  • FedEx Saturday: $75

Shipping for New & Never Worn Watches

  • FedEx Saver: $0, Included For Watches Under $500
  • FedEx Two Day: $0, Included For Watches Over $500
  • FedEx Priority Overnight: Add $30
  • FedEx Saturday: Add $45


  • Shipping fees are non-refundable. Although Two-Day shipping is included in the price of Never Worn Watches, it is not included if you return the watch. In case of a return Two-Day is $30, Overnight is $50 and Saturday is $65.
  • FedEx Saver, when available in the shopping cart (typically on lower priced items/accessories) is invoiced at $10, but will be invoiced at $20 (our actual cost) in the event of a return.
  • Items over $15,000 must be shipped via Priority Overnight.
  • Free shipping does not apply to International Orders or shipments to Hawaii or Alaska
    • Orders shipped to Hawaii or Alaska may incur a shipping surcharge which will be determined by the actual cost of shipping based on your location.  This should typically be $10-$40 for Second Day delivery or $20-$60 for an Overnight delivery.  Please feel free to ask for a shipping quote.
  • This new shipping policy is in effect as of March 11, 2020

Texas residents must add 8.25% sales tax or provide a tax resale certificate. All shipments outside Texas are exempt from Texas sales tax. Orders from other countries will be charged accordingly by your country.

We are not responsible for any fees, customs, or taxes charged by the inbound country. Please check with your local customs for duties and tax information.

Privacy Policy

Bernard Watch does not distribute our customer's information to any third parties. We have never sold our customer list and have no plans to ever do so in the future. Please feel free to check out our complete Privacy Policy.

Payments Accepted

We accept all major credit cards: American Express, Visa, Mastercard, Discover, and Apple Pay . Virtual cards and gift cards cannot be accepted. For a discounted price we accept wire transfers, money orders, cashiers checks. Orders over $8000 must be paid by bank wire transfer. Cashier's checks are accepted for orders up to $6,000. Orders up to $8,000 may be paid using a credit card, however due to the risks involved in selling high-value items online, we reserve the right to refuse to accept a credit card for payment even if an order is under the $8,000 limit and we may request supplemental information to verify identity. For orders under $1,000 wire/money order/cashier's check is not offered as a payment method. These policies are for US orders only. Please review our International policies if you wish to purchase from outside the US.

Warranty Info

As indicated below, the warranty is through Bernard Company. Since we are not authorized dealers or affiliated directly with any brand we sell, we can make no promises regarding any factory warranty, and it should not be presumed.


Bernard Company (BC) warranties this watch for a period of two years from the date of purchase to be free of defects in material and workmanship under normal use and service. This warranty excludes damage or wear to case parts such as the crystal, strap, bracelet, bezel, crown, pushers and battery. The watch is warranted against moisture or water damage if we represent the watch to be water-resistant. Do not bathe with the watch. If you notice moisture in your watch, notify us immediately. We do not want rust to damage the movement of the watch. Do not use the crown or chronograph pushers while the watch is wet.

Our liability is limited solely to the repair of the watch if returned to us. BC reserves the right to refund the purchase price. BC may also replace it with a watch of comparable value, if acceptable to both BC and the original purchaser.

This warranty is void if this watch has been tampered with, taken apart, abused, or repaired by anyone except BC without our permission. If the watch needs servicing, return it to BC with a copy of the original invoice and a description of what is wrong with the watch.

It is not necessary to send us the box or instructions. Most servicing can be done in 30 days, but can take longer however. Package your watch carefully, and send the watch insured to: Bernard Company; 3834 Spicewood Springs, Suite 201; Austin, Texas 78759. 512-342-2229.

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