Omega Speedmaster 311.30.42.30.01.005

The Omega Speedmaster Professional reference 311.30.42.30.01.005 represents the contemporary continuation of the legendary Moonwatch lineage, maintaining the essential DNA of the timepiece that earned NASA qualification and accompanied every crewed lunar mission. This modern iteration preserves the core design philosophy established in the 1960s while incorporating subtle refinements developed over decades of spaceflight heritage. As part of Omega s Professional collection, this reference upholds the Speedmaster s distinguished position as the only watch certified for EVA (Extra-Vehicular Activity) and remains the official timepiece issued to NASA astronauts, cementing its status among the most historically significant chronographs ever produced. The 42mm stainless steel case houses the manually-wound Caliber 1861, a direct descendant of the flight-qualified movement that powered the original Moonwatch. This rhodium-plated movement features 18 jewels and operates at 21,600 vibrations per hour, delivering the same fundamental architecture that proved reliable in the extreme conditions of space exploration. The movement s column-wheel chronograph mechanism and horizontal clutch system provide precise timing functions, while its manual-winding nature ensures independence from rotor mechanisms that could potentially fail in zero gravity. Technical specifications include a power reserve of approximately 48 hours and traditional chronograph functions with central seconds, 30-minute, and 12-hour subsidiary registers. Design elements remain faithful to the space-qualified original, featuring the iconic black dial with applied indices, white luminous markers, and the distinctive asymmetrical case construction necessary to accommodate the chronograph pushers and crown guards. The fixed black aluminum bezel with tachymeter scale maintains the tool watch functionality that originally attracted NASA s attention, while the Hesalite crystal preserves authenticity over the more modern sapphire alternatives used in other Speedmaster variants. For collectors, this reference represents exceptional value within the Professional line, offering genuine Moonwatch heritage in current production form. Its collectibility stems from its unbroken connection to space exploration history, making it equally relevant for horological enthusiasts and space memorabilia collectors, while its ongoing production ensures accessibility compared to vintage examples from the heroic era of space exploration.