Omega Seamaster Railmaster Omega Co-Axial Master Chronometer Watch - 40 mm Steel Case - Vertically Brushed Black Dial - 220.10.40.20.01.001

Within Omega's storied Railmaster lineage, reference 220.10.40.20.01.001 represents the modern evolution of the anti-magnetic professional's watch, now enhanced with Master Chronometer certification and housed in a precisely proportioned 40mm stainless steel case. The vertically brushed black dial creates a distinctive linear texture that catches light differently than the radial sunburst finishes found on other Seamaster variants, establishing this Railmaster as a tool watch with understated sophistication. This Omega Seamaster 220.10.40.20.01.001 maintains the original Railmaster's utilitarian DNA while incorporating contemporary horological advances that exceed even COSC chronometer standards. The unworn condition preserves every detail as intended by Omega's Bienne manufacture.

Key Features & Specifications

• Master Chronometer Caliber 8800 — Anti-magnetic to 15,000 gauss with Co-Axial escapement and silicon balance spring, certified by METAS for precision and magnetic resistance
• Vertically Brushed Black Dial — Linear brushing technique creates subtle vertical striping that distinguishes this Railmaster from radial or sunburst dial treatments across the Seamaster collection
• 40mm Stainless Steel Case — Brushed steel construction with polished bezel edges, sized for contemporary wrist proportions while maintaining the tool watch aesthetic
• Sapphire Crystal Protection — Anti-reflective coating on both sides ensures optimal legibility under varying light conditions
• Professional Water Resistance — 150 meters depth rating suitable for recreational diving and daily wear scenarios
• Railmaster Heritage Design — Clean three-hand layout with applied hour markers echoes the original 1957 Railmaster's professional legibility standards

About This Timepiece

• Bracelet Sizing — Complimentary bracelet sizing included with every purchase. Contact us with your wrist measurement and we'll have it ready before shipping.
• Authenticity Guarantee — Every watch is thoroughly inspected and authenticated by our team of certified horologists. 100% authentic, guaranteed.
• Warranty — New model watches include a 1-year mechanical warranty covering manufacturing defects. All watches include our confidence guarantee.
• Shipping — Free insured overnight FedEx shipping on all orders. Fully insured, signature required, discreet packaging.