Omega Speedmaster Professional

The Omega Speedmaster Professional emerged in 1957 as a racing chronograph, not as a space instrument. Omega introduced the reference CK 2915 with a novel external tachymeter scale bezel—a first for wristwatches—combined with a large, legible dial designed for drivers monitoring lap times. The watch featured a domed Plexiglas crystal (Hésalite), simple high-contrast index markers, and the Calibre 321 movement. The name itself derived from the model's tachymeter innovation and followed Omega's established naming convention set by the Seamaster and Railmaster lines.

The watch's trajectory shifted unexpectedly in 1962 when astronaut Wally Schirra wore a Speedmaster during the Mercury-Atlas 8 mission, making it the first of its kind in space. By 1964, Omega had refined the design with twisted lugs—a distinctive case style with beveled lugs that would define the Speedmaster's appearance for decades. This iteration, the reference 145.012, became the official Speedmaster Professional and was worn during the first American spacewalk in 1965 and, most famously, by Buzz Aldrin on the lunar surface during Apollo 11 in 1969. NASA's subsequent qualification of the watch for extravehicular activity cemented its status as the only chronograph approved for spacewalks.

The Speedmaster Professional's endurance reflects both technical reliability and design restraint. While the movement evolved from the Calibre 321 to the Calibre 861 in 1968—a change driven by production efficiency rather than performance—the watch's essential character remained intact. The replacement of radioactive tritium lume with modern pigments in the 1990s represented a practical modernization without aesthetic disruption. The watch has maintained its flight qualification through successive NASA evaluations and continues to be produced in its original form: a manual-wind chronograph with a 42mm case, Hésalite crystal, and tachymeter bezel. Its price has remained roughly equivalent to its 1957 cost when adjusted for inflation, positioning it as one of the most historically significant instruments available at any price point.