Omega Seamaster Railmaster Omega Co-Axial Master Chronometer Watch - 40 mm Steel Case - Vertically Brushed Black Dial - Two-Tone Grey Coated Nylon Fabric Strap - 220.12.40.20.01.001

Omega Seamaster 40 mm with Black Dial and Two-Tone Grey Nylon Strap

This Seamaster features a robust 40 mm stainless steel case with screw-in crown and a domed scratch-resistant sapphire crystal, treated with anti-reflective coating on both sides for superior clarity. The vertically brushed black dial is paired with brushed stainless steel hands and recessed hour markers, all enhanced with vintage-color Super-LumiNova for excellent legibility and timeless appeal.

Powered by the Omega Co-Axial Master Chronometer Caliber 8806, this self-winding movement offers superior precision, magnetic resistance, and a 55-hour power reserve. Completing the look is a durable two-tone grey coated nylon fabric strap, combining sportiness with comfort. With water resistance up to 150 meters (500 ft), it’s built for both adventure and everyday refinement.

Key Features

• 40 mm stainless steel case with screw-in crown

• Domed sapphire crystal with anti-reflective coating on both sides

• Vertically brushed black dial with vintage-color Super-LumiNova

• Brushed stainless steel hands and recessed hour markers

• Omega Co-Axial Master Chronometer Caliber 8806

• ~55 hours of power reserve

• Two-tone grey coated nylon fabric strap

• Water resistant to 150 meters (500 ft)

A masterful balance of performance, precision, and understated elegance.