“SMP 300” is a familiar shorthand for the OMEGA Seamaster Diver 300M, but it does not identify one specific reference or generation. The collection dates to 1993; its specifications vary by model and release. For a meaningful review or comparison, start with the exact reference rather than assuming every Diver 300M has the same case, movement, bracelet, or strap system.
What “SMP 300” refers to
OMEGA dates the Seamaster Diver 300M collection to 1993. The brand identifies its wave-pattern dial, skeletonized hands, and helium escape valve as recurring design details. OMEGA described the collection in its November 2024 launch announcement as “one of OMEGA’s most recognizable and popular ocean timepieces”—the manufacturer’s characterization, not an independent ranking. OMEGA’s collection history and launch announcement.
The shorthand “SMP 300” does not establish a single model. A reference number and production generation are needed to pin down a watch’s materials, dimensions, movement, and fitting system.
What the specifications tell you—and what they don’t
November 2024 steel range
OMEGA’s November 21, 2024 announcement describes a group of 42 mm watches with stainless-steel options, black aluminium details or a grade 5 titanium bezel variant, and either a mesh bracelet or rubber strap. The listed movement is Co-Axial Master Chronometer calibre 8806, and the watches have sapphire casebacks. These are specifications for the announced range, not a template for every historical Diver 300M. OMEGA’s November 2024 announcement.
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Later material and colour variants
Subsequent announcements illustrate how much the configuration can change while the collection name remains the same:
- December 2024 titanium and Bronze Gold release: OMEGA describes a 42 mm brushed grade 2 titanium case and mesh bracelet, with a rubber-strap option and calibre 8806. OMEGA’s December 2024 announcement.
- February 2025 Bronze Gold and burgundy release: OMEGA describes two 42 mm models with mesh bracelet or rubber strap options and calibre 8806. OMEGA’s February 2025 announcement.
- July 2025 orange release: OMEGA describes 42 mm steel models with mesh bracelets or integrated orange rubber straps and calibre 8806. OMEGA’s July 2025 announcement.
Those launches document specific editions; they do not establish that every watch in the family is 42 mm or uses calibre 8806.
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America’s Cup edition and Quick-Change
The America’s Cup edition is another distinct configuration: OMEGA describes a 42 mm steel model with a blue ceramic unidirectional bezel and a choice of steel bracelet or blue rubber strap using its Quick-Change system. That feature is documented for this edition, not for every SMP 300. OMEGA’s America’s Cup announcement.
How to compare two Diver 300M watches
Before comparing appearance or value, confirm that the watches are the references and generations you intend to compare. Then check the details that determine whether they are genuinely alike:
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- Reference and generation: use the exact reference, not just the collection name.
- Case and bezel: compare the listed materials and finishes; the releases above show steel, grade 2 titanium, grade 5 titanium, and Bronze Gold configurations.
- Movement and certification: verify the movement and any certification stated for that exact reference. Calibre 8806 is specified for the cited releases, not established here as universal.
- Bracelet or strap and fitting: identify what is supplied and how it attaches. A brand’s Quick-Change system is not proof that another reference shares it.
- Dimensions and condition: check the model-specific dimensions and assess the individual watch’s condition rather than relying on a family-level description.
- Price and availability: compare only verified figures for the relevant region, seller, and date. No current price, stock status, or secondary-market value is established for an unspecified reference.
Strap and bracelet compatibility
Do not buy a replacement strap or bracelet based solely on the words “Seamaster Diver 300M.” OMEGA documents mesh bracelets and rubber straps across several releases, but the cited announcements do not establish universal interchangeability. Quick-Change is specifically described for the America’s Cup edition. Confirm your watch’s exact reference and fitting system before ordering an accessory.
Care and water resistance
OMEGA’s user manual recommends having water resistance tested once a year at an authorised OMEGA service centre. Water resistance can be affected by the condition of the watch, so the manual’s recommendation is a maintenance check, not a guarantee that an individual watch is safe to use in water.
Rank #4
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- After swimming in the sea, rinse the watch with fresh water.
- Clean metal bracelets, rubber straps, and waterproof cases with soapy water and a toothbrush, then dry with a soft cloth.
- Push the crown to its specified position after use, and do not operate it in water.
- Follow the instructions in the manual supplied for the exact watch.
OMEGA user manuals and care guidance.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Price, stock, and the limits of a collection-level review
Without an exact reference and a region, there is no responsible single price or availability figure to give for “the SMP 300.” Current retail stock and secondary-market value also require model-specific, date-specific verification. The manufacturer announcements above establish selected configurations and care advice; they do not provide current market comparisons or independent performance testing.
Quick Recap
Best Value
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Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
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