Omega Speedmaster Moonwatch Professional 310.30.42.50.01.001 42 mm Steel Black Dial Hesalite Watch for Men

Hesalite, bearing the OMEGA logo at its centre, covers the black step dial of this Speedmaster Moonwatch Professional, while an embossed Seahorse medallion decorates the caseback. The 42 mm asymmetrical stainless steel case follows the fourth-generation design worn on the Moon, and the anodised aluminium bezel ring carries the dot over 90.

It is fitted to a brushed bracelet of five arched links per row with a comfort-setting foldover clasp. The manual-winding Calibre 3861 drives small seconds, 30-minute and 12-hour recorders and the central chronograph, and is certified as a Co-Axial Master Chronometer by METAS, with resistance to 15,000 gauss and a 50-hour power reserve. Water resistance is 50 metres.

Technical specifications

• Brand: OMEGA
• Collection: Speedmaster – Moonwatch Professional
• Model: Speedmaster Moonwatch Professional Co-Axial Master Chronometer Chronograph
• Reference: 310.30.42.50.01.001
• Case: Steel, 42 mm diameter, 13.54 mm thick
• Lug-to-lug: 47.50 mm
• Lug width: 20 mm
• Bezel: Anodised aluminium bezel ring with dot over 90
• Crystal: Hesalite crystal with OMEGA logo in the centre
• Caseback: Embossed Seahorse medallion
• 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.): 134 g
• Warranty: 5-year OMEGA international warranty
• Made in: Switzerland
• Manufacturer: OMEGA SA, Biel/Bienne, Switzerland