2021 Omega Seamaster Diver Complete Set!

Omega Seamaster Diver 300M Co-Axial — Ref. 212.30.41.20.01.003
Among Seamaster collectors, the ref. 212.30.41.20.01.003 occupies a very specific and increasingly coveted position in the lineup. Produced from roughly 2012 to 2017, this is the watch the community knows as the "No Wave" Seamaster — a reference to its clean, glossy black lacquered dial that deliberately omits the iconic wave pattern found on earlier and later generations. What was once a polarizing design choice has aged into one of its most desirable traits: the smooth dial gives the watch a refined, almost dressy versatility that its wave-dial siblings can't match, making it as comfortable with a suit as it is with a wetsuit.
This is also the first Seamaster Professional to carry a ceramic bezel insert, pairing the scratch-resistant black ceramic with brushed steel numerals and indexes — a significant material upgrade over the aluminum bezels of previous generations. It was the last Seamaster Diver 300M built on the 41mm case platform before Omega moved to the larger 42mm case and thicker profile of the current-production ref. 210. For many wrists, this makes it the sweet spot: a true professional dive watch that wears with a restrained, proportional footprint and a slimmer 13mm thickness that its successor simply can't replicate.
Under the solid caseback — engraved with the large heritage Hippocampus seahorse — sits the Omega Calibre 2500, featuring the Co-Axial escapement invented by master watchmaker George Daniels and commercialized by Omega as the first practical new mechanical escapement in over 250 years. The applied Omega logo, red-accented dial details, luminous skeleton hands, and the purposeful helium escape valve at 10 o'clock round out a watch that represents what many collectors consider the evolutionary design pinnacle of the Seamaster Professional diver — all the tool-watch credibility with none of the excess.


Key Details

• Reference: 212.30.41.20.01.003
• Movement: Omega Calibre 2500, automatic self-winding with Co-Axial escapement
• Calibre Base: Modified ETA 2892-A2 architecture
• Escapement: Co-Axial (George Daniels design) — reduces friction and extends service intervals
• Chronometer Certified: COSC certified, rated -4/+6 seconds per day
• Frequency: 25,200 vph (3.5 Hz)
• Jewels: 27
• Power Reserve: 48 hours
• Movement Diameter: 25.6mm
• Case Diameter: 41mm
• Case Thickness: ~13mm
• Lug-to-Lug: 47.4mm
• Lug Width: 20mm
• Approximate Weight: 179g (on bracelet)
• Case Material: Stainless steel, brushed with polished beveled edges
• Caseback: Solid stainless steel with engraved Hippocampus
• Bezel: Unidirectional rotating, black ceramic insert with brushed steel markings
• Crystal: Domed sapphire, scratch-resistant, anti-reflective coating on both sides
• Dial: Black lacquered, no wave pattern ("No Wave"), applied indices and logo
• Hands: Luminous skeleton style
• Date: Window at 3 o'clock
• Crown: Screw-down stainless steel with Omega logo
• Helium Escape Valve: 10 o'clock position
• Water Resistance: 300 meters / 1,000 feet (30 bar)
• Bracelet: Stainless steel, brushed with polished center links
• Clasp: Push-button folding deployant with diver's extension