Omega adds two 43.5mm Seamaster Diver 300M models in blue and brown ceramic

Blue ceramic and Grade 5 titanium

Reference 210.92.44.20.03.001 pairs a blue ceramic case and a matching blue ceramic dial carrying the modern large-wave pattern with Grade 5 titanium components, including the bezel, crowns, and caseback. The unidirectional dive bezel features a 60-minute diving scale filled with white enamel. On the dial, the skeletonised hands are finished in a titanium PVD colourway and filled with white Super-LumiNova, while the markers and the Omega logo are all rendered in white without other colour accents.

This version is fitted with a 21mm blue curved-end rubber strap secured by a Grade 5 titanium pin buckle. Complete with its strap, the watch weighs about 106 grams, making it three grams lighter than its steel equivalent.

Brown ceramic and 18K Sedna Gold

Reference 210.62.44.20.13.001 combines a brown ceramic case, caseback, and wave-pattern dial with Omega's 18K Sedna Gold alloy on the bezel and crowns. It follows an earlier black ceramic and Sedna Gold version, reference 210.62.44.20.01.001, which had an embossed ceramic bezel. On the new brown model, the bezel's diving scale is made in Omega Ceragold. The skeletonised hands are crafted from Sedna Gold and filled with white Super-LumiNova, and the remaining dial markings mix white and Sedna Gold details.

The watch is supplied on a 21mm brown curved-end rubber strap with a brown ceramic pin buckle. Its total weight is approximately 122 grams, which is seven grams heavier than the standard steel-and-gold model on a rubber strap.

Case dimensions, calibre 8806, and the wider lineup

Both watches share the same dimensions: a 43.5mm case diameter, a 51.50mm lug-to-lug length, a thickness of 14.27mm, and a 21mm lug width. Each dial is covered by a domed, scratch-resistant sapphire crystal with anti-reflective treatment on both sides. Standard Seamaster Diver 300M traits remain in place, including the helium escape valve, screw-down crown, unidirectional bezel, and 300 metres (30 bar) of water resistance.

Through the transparent sapphire crystal in the caseback, the automatic Co-Axial Master Chronometer calibre 8806 is visible. Approved by METAS, the movement resists magnetic fields up to 15,000 gauss. It runs at a frequency of 25,200 vibrations per hour (3.5 Hz), has 35 jewels, winds in both directions, and provides a 55-hour power reserve. Technical and decorative elements include a free-sprung balance with a silicon balance spring, along with a rhodium-plated rotor and bridges finished with arabesque Geneva waves.

First introduced in 1993, the Seamaster Diver 300M has gone through many material, colour, and movement updates while keeping its wave dial and helium escape valve. With these two additions, the main Seamaster 300M line now includes 53 references, or 65 when chronographs and special editions are counted.

What the serial can tell you

On an Omega watch, the serial number is a seven- or eight-digit movement number. Because it belongs to the movement rather than the case, it dates the movement, which may have been assembled before the watch, rather than the case or the sale. Since the early 1990s, this number appears on the caseback or the back of a lug as well as on the movement and the warranty card, while the dotted number inside the caseback, and on the warranty and pictogram cards, is the reference.

Published collector tables, such as those from ChronoMaddox and Bob's Watches, cover Omega movement numbers from 17,000,000 (pointing to 1960) up to 83,999,999 (pointing to the 1991 to 2007 span at decade level). The tables do not cover numbers from 84,000,000 onwards, which correspond to about 2008 and later. For a modern Seamaster Diver 300M, a seven- or eight-digit serial number falling outside the published ranges is dated only by its format, though a cross-check can still compare the reference's production years. In addition, the Omega Extract from the Archives service has been suspended since May 2023, with collectors reporting it discontinued in April 2025 and the brand's extract page redirecting to the home page as of late October and early November 2026.