Omega Speedmaster Moonwatch Professional 310.30.42.50.01.002 42 mm Steel Black Dial Watch for Men

Sapphire crystal front and back distinguishes this steel-bracelet Speedmaster Moonwatch Professional from its hesalite sibling, with the caseback opening onto the manual-winding Calibre 3861. The 42 mm asymmetrical steel case follows the fourth-generation design, and the black step dial, with its applied OMEGA logo, sits beneath a domed front crystal and an anodised aluminium bezel ring with dot over 90.

The bracelet has five arched links per row in polished and brushed steel, closing with a foldover clasp with comfort setting. Calibre 3861 powers small seconds, 30-minute and 12-hour recorders and the central chronograph; it is a Co-Axial Master Chronometer certified by METAS and resistant to 15,000 gauss, with a silicon balance spring and 50 hours of power reserve. It is water resistant to 50 metres.

Technical specifications

• Brand: OMEGA
• Collection: Speedmaster – Moonwatch Professional
• Model: Speedmaster Moonwatch Professional Co-Axial Master Chronometer Chronograph
• Reference: 310.30.42.50.01.002
• Case: Steel, 42 mm diameter, 13.18 mm thick
• Lug-to-lug: 47.50 mm
• Lug width: 20 mm
• Bezel: Anodised aluminium bezel ring with dot over 90
• Crystal: Domed, scratch-resistant sapphire crystal with anti-reflective treatment inside
• Caseback: Sapphire crystal caseback
• Water resistance: 5 bar (50 metres / 165 feet)
• Dial: Black
• Functions: Hours, Minutes, Small seconds, Chronograph
• Movement: OMEGA 3861, manual-winding with Co-Axial escapement
• Certification: Co-Axial Master Chronometer, certified by METAS (magnetic resistance to 15,000 gauss)
• Power reserve: 50 hours
• Frequency: 3 Hz
• Bracelet: Steel
• Clasp: Foldover clasp with comfort setting
• Weight (approx.): 138 g
• Warranty: 5-year OMEGA international warranty
• Made in: Switzerland
• Manufacturer: OMEGA SA, Biel/Bienne, Switzerland