The Omega Speedmaster Professional Moonwatch (Reference 3570.50.00) is one of the most iconic and highly collected references in the Speedmaster family. Produced from 1996 until 2014, this exact reference represents the truest modern connection to the classic watches qualified by NASA for spaceflight.
 
 The Caliber 1861 Movement
  At the core of this watch is the legendary Omega Caliber 1861 movement: 

• Winding Mechanism: Manual-wind mechanical chronograph (no automatic rotor).

• History: Based on the robust Lemania 1873 architecture, the 1861 replaced the older caliber 861 in 1996. It introduced premium rhodium plating across its components for improved corrosion resistance and aesthetic finish. 

• Jewels & Reserve: 18 jewels with an approximate 48-hour power reserve ticking at 21,600 vph (3Hz). 

• Delrin Brake: It utilizes a durable, self-lubricating synthetic Delrin brake for the chronograph mechanics to guarantee longevity and prevent frictional wear.

• The 3570.50 variant is widely praised by enthusiasts because it retains a traditional Hesalite (acrylic) crystal rather than modern sapphire, giving the dial a warmer, vintage appearance and an historically faithful layout.

  • Case Diameter: 42 mm

  • Thickness & Lug Width: 13.8 mm thick; 20 mm lug width

  • Crystal: Domed Hesalite (acrylic, with an engraved miniature Omega logo at its center)

  • Dial & Bezel: Matte black dial with luminous markers; black aluminum tachymeter scale bezel

  • Water Resistance: 50 meters (5 bar / 165 feet)

  • Caseback: Solid steel screwed-in caseback stamped with the iconic Speedmaster Hippocampus emblem and engraved with: "Flight Qualified by NASA for all manned space missions" and "The first watch worn on the moon".