Professional Maritime Horology

Omega Seamaster Diver 300M
42mm Classic Black Dial Edition

The definitive modern diving classic recreated with architectural exactness. Featuring a laser-etched ceramic wave dial, 120-click unidirectional bezel, and solid steel construction, this 42mm reference offers uncompromising tool-watch utility.

I / Chronometric Calibre Performance

A standalone automatic mechanical movement powers this Seamaster reference to deliver precise chronometric stability. Watchmakers engineered the movement architecture to support a smooth 4Hz sweeping seconds hand alongside a 55-hour bench power reserve. The central rotor winds bidirectionally to maintain constant mainspring torque. Each caliber undergoes 6-position timing calibration on the MTG-3000 timegrapher before final assembly.

▹ Standalone Calibre Platform with Fluid 28,800 BPH Sweep
▹ Dependable 55-Hour Mainspring Power Reserve Capacity
▹ Instantaneous Date Calendar Window positioned at 6 O’Clock

II / Material Execution & Casing Parity

Cold-forged 316L stainless steel constructs the 42mm case shell, complete with skeletonized hands and helium escape valve geometry at 10 o’clock. The high-gloss black ZrO2 ceramic dial displays precision laser-engraved wave patterns that catch light dynamically. A black ceramic bezel houses crisp white enamel immersion scale numerals, while a solid steel bracelet with a diver extension folding clasp completes the build.

▹ High-Gloss Black ZrO2 Ceramic Dial with Laser-Etched Waves
▹ 120-Click Ceramic Bezel with White Enamel Scale Inlays
▹ Solid 316L Stainless Steel Bracelet with Milled Diver Extension Clasp

Technical Data Sheet

MODEL REFERENCE	210.30.42.20.01.001
COLLECTION LINE	Omega Seamaster Diver 300M Professional Series
MOVEMENT ENGINE	Automatic Mechanical Movement (55H Power Reserve)
DIAL & BEZEL	Black Ceramic ZrO2 Wave Dial \| Black Ceramic Bezel with Enamel Scale
CASE METALLURGY	Milled 316L Stainless Steel with Helium Valve Shell
BRACELET & CLASP	Solid Stainless Steel Bracelet with Push-Button Diver Extension Clasp
CRYSTAL & LUME	Double AR-Coated Scratch-Resistant Sapphire \| Dual-Tone Super-LumiNova
CASE DIMENSIONS	42.0 mm Diameter
HYDROSTATIC RATING	30m Splash-Proof (Atelier Pressure Test Recommended)

Collector FAQ & Technical Insights

Is the dial crafted from real ceramic material?
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Yes. The dial uses authentic high-gloss ZrO2 black ceramic etched with precise laser waves. The surface resists fading and maintains a deep, optical reflection under light.

How does the ceramic bezel click action feel during rotation?
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The 120-click unidirectional bezel operates with firm ratchet feedback and uniform damping. The white enamel immersion scale numerals remain clear and fade-resistant.

Does the watch feature dual-tone luminescence in low light?
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Yes. Swiss Super-LumiNova compounds fill the hands and markers, emitting blue luminescence on the hour markers and green luminescence on the minute hand and bezel dot.

Atelier Diagnostics & Verification

Every Seamaster Diver 300M undergoes rigorous 6-position timegrapher analysis and macro photo evaluation prior to packaging. To discover additional options, you can explore our full Omega collection.

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