Omega Seamaster 300M Master Chronometer Black

Engineered by VS Factory (VSF) for collectors who care as much about what’s under the caseback as what’s on the dial, the Omega Seamaster 300M Master Chronometer Black pairs a Solid 316L Stainless Steel (Satin & Mirror Finished) exterior (42MM (1:1 Omega Case Architecture)) with the cloned Co-Axial Master Chronometer Automatic Clone (28,800 vph) movement (55–60 Hour Power Reserve (28,800 vph)).

Dial Typography, Lume Application & Clasp Mechanics

The winding stem engages with a firm, positive click across every setting position, and the hands advance with zero backlash. Sealed behind a scratch-resistant sapphire crystal and triple-checked gaskets, it’s built for daily wrist rotation rather than sitting in a display box.

Individual QC Video & Triangular Express Logistics

Every Omega Seamaster 300M Master Chronometer Black goes through our three-stage Geneva bench check within 24–48 hours of your order: first, a 5-position digital timegrapher calibration (+/- 2s/day); second, a dry vacuum pressure test on the case seals; and third, a macro video inspection sent directly to your WhatsApp or email for sign-off. Your shipment travels via insured triangular express air freight with a 100% customs pass guarantee and our 3-year mechanical warranty.