Seamaster Diver 300M - Blue (2020)

Description

The Omega Seamaster Diver 300M Co-Axial Master Chronometer ref. 210.30.42.20.03.001 is the definitive expression of what a modern Swiss dive watch should be — a 42mm instrument that combines genuine underwater capability with a level of movement technology and certification that no competitor at any price point can match.

 Since its introduction in 1993, the Seamaster Diver 300M has been the benchmark against which all other luxury dive watches are measured, and the current generation — powered by the Calibre 8800 and METAS Master Chronometer certified — represents the most technically accomplished iteration in the collection's history.

 The blue polished ceramic dial is one of the most immediately recognisable surfaces in modern watchmaking: a deep, richly coloured ceramic surface across which fine laser-engraved waves flow with extraordinary precision, the wave motif that has defined the Seamaster's visual identity since 1994 rendered here at a quality that only ceramic can achieve — harder than steel, immune to scratching, and utterly stable in colour over decades of wear.

Rhodium-plated skeleton hands and raised indexes filled with white Super-LumiNova deliver the legibility that a serious dive watch demands in any light condition. The blue ceramic unidirectional rotating bezel with white enamel diving scale clicks precisely through 120 positions, and the conical helium escape valve at 10 o'clock accommodates saturation diving requirements.

 The domed sapphire crystal with anti-reflective treatment on both sides frames the dial without distortion, while the wave-edged sapphire caseback reveals the Calibre 8800 in full — Omega's Co-Axial Master Chronometer movement, METAS-certified to +0/+5 seconds per day across eight additional tests beyond COSC, and resistant to magnetic fields exceeding 15,000 gauss. The movement beats at 25,200 vph with a 55-hour power reserve, a free-sprung silicon balance spring, and Co-Axial escapement for reduced friction and extended service intervals.

The stainless steel bracelet with diving extension clasp completes a watch of extraordinary completeness. This pre-owned example presents in excellent condition with full box and papers.

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