Omega Speedmaster Moonwatch Professional 310.30.42.50.01.002 42mm (2023)

The Omega Speedmaster 310.30.42.50.01.002, often called the “Sapphire Sandwich,” is the modern evolution of the legendary Moonwatch. Its 42mm stainless steel case retains the classic asymmetrical styling and “step” dial, now with a sapphire crystal on both front and back to showcase the movement. The watch is powered by the Co-Axial Master Chronometer calibre 3861, offering about 50 hours of reserve, anti-magnetic protection, and precision certified by METAS. With its black dial, aluminum tachymeter bezel (with the iconic “Dot Over 90”), and a fully brushed/polished steel bracelet with the updated folding clasp, this Speedmaster blends historical reverence with contemporary upgrades. Water resistance is moderate at 50m, reflecting its heritage rather than dive utility.

Specifications:

• Range: Moonwatch Professional “Sapphire Sandwich”
• Model: 310.30.42.50.01.002
• Year: 2023
• Dial: Black “step” dial with applied logo, white luminous hands and markers
• Crystal: Sapphire crystal front and display back
• Bezel: Fixed stainless steel with black anodized aluminium tachymeter ring (with Dot Over 90)
• Case Size: 42 mm
• Case Material: Stainless steel
• Caseback: Sapphire crystal exhibition
• Bracelet: Stainless steel bracelet
• Clasp: Fold-over / push-button deployant clasp (updated style)
• Movement: Manual-winding Omega calibre 3861 (Co-Axial, Master Chronometer)
• Power Reserve: approx. 50 hours
• Water Resistance: 50 m / 5 ATM