Sixty years ago, on March 1, 1965, a legend of space exploration was officially born, in the unforgiving vacuum of space and the punishing trials of Earth. It was on this day that NASA, after a series of grueling and destructive tests, officially certified the Omega Speedmaster as the sole timepiece “flight-qualified for all manned space missions.” As we celebrate this remarkable diamond anniversary, we look back at the incredible journey of the watch that earned its place among the stars.
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Surviving NASA’s 11 Torturous Tests
In the early 1960s, NASA’s quest for a mission-critical chronograph was a matter of safety and precision. They subjected several commercially available watches to a battery of eleven tests so severe they were designed to test components to destruction. Only one watch emerged victorious. The tests included:
High Temperature: 48 hours at 71°C and then 30 minutes at 93°C
Low Temperature: Exposed to -18°C for 4 hours
Vacuum: Heated in a vacuum chamber and then cooled to -18°C over multiple cycles
Humidity: 240 hours in a 95% humidity environment with temperatures between 25°C and 70°C
Corrosion: Exposed to an oxygen atmosphere at 70°C for 48 hours
Shock: Six shocks of 40 Gs, each lasting 11 milliseconds, applied in six different directions
Acceleration: Progressive acceleration from 1 G to 7.25 Gs within 333 seconds, and then to 16 Gs for 30 seconds in three axes
Decompression: Vacuum of 10⁻⁶ atm (1.47 x 10⁻⁵ psia) at 71°C for 90 minutes, followed by 30 minutes at 93°C
High Pressure: Subjected to an air pressure of 1.6 atmospheres (23.5 psia) for one hour
Vibration: Exposed to random vibrations in three axes between 5 and 2,000 Hz with an acceleration of 8.8 G
Acoustic Noise: Exposed to 130 dB of noise between 40 and 10,000 Hz for 30 minutes
Through it all, the Omega Speedmaster continued to function, its robust design proving its supreme reliability.

The Chosen One: The OMEGA Speedmaster ST 105.003
The specific model that cemented this legacy was the Omega Speedmaster reference ST 105.003. Produced between 1964 and 1969, this is the exact reference that NASA engineers purchased anonymously from a Houston jeweler to conduct their tests.
Affectionately nicknamed the “Ed White” after the astronaut who wore it during the first American spacewalk on the Gemini 4 mission, the ST 105.003 is visually distinct. It was the last Speedmaster to feature straight lugs, a detail cherished by collectors. It had a 39mm case, no “Professional” text on its dial, and was powered by the legendary Calibre 321 manual-winding movement.
This movement, with its column-wheel chronograph mechanism, was renowned for its durability and precision, which were key factors in its successful NASA certification.

From Qualification to Legend: A Legacy Forged in Space
The Speedmaster’s official qualification was just the beginning of its storied history with space exploration. Just weeks after being certified, it was on the wrist of Gus Grissom and John Young during the Gemini 3 mission. It was the watch worn by Ed White during the first American spacewalk on Gemini 4.
However, its most celebrated moment came on July 20, 1969, when Buzz Aldrin stepped onto the lunar surface, his Omega Speedmaster strapped to the outside of his spacesuit, becoming the first watch worn on the Moon. Neil Armstrong left his Speedmaster in the Lunar Module as a backup for the mission’s electronic timer, a testament to the trust placed in this mechanical marvel.

The Speedmaster’s role as a lifesaver was solidified during the perilous Apollo 13 mission in 1970. When an oxygen tank explosion crippled the spacecraft’s digital timers, the astronauts used their Speedmasters to time the critical 14-second engine burn that was essential for their safe return to Earth. For its crucial role, Omega was awarded NASA’s prestigious “Silver Snoopy Award.”

Modernizing a Legend: The Arrival of the Calibre 3861
While honoring its heritage, Omega has not let the Moonwatch rest on its laurels. The modern Speedmaster is powered by the OMEGA Co-Axial Master Chronometer Calibre 3861, a movement that represents a significant technological leap forward while retaining the soul of its predecessors.
The Calibre 3861 introduces several key innovations:
Co-Axial Escapement: This signature Omega technology reduces friction within the movement, leading to greater long-term accuracy and stability.
Master Chronometer Certification: To earn this title, the watch and its movement must pass eight rigorous tests set by the Swiss Federal Institute of Metrology (METAS), including functioning flawlessly when exposed to magnetic fields of 15,000 gauss. This makes the modern Moonwatch essentially anti-magnetic for everyday life.
Silicon Balance Spring: The Si14 balance spring further enhances the movement’s resistance to magnetism and improves its chronometric performance.
Hacking Seconds: A feature that stops the seconds hand when the crown is pulled, allowing for more precise time-setting—a small but highly practical upgrade.

Despite these cutting-edge internal upgrades, the Calibre 3861 remains a manual-winding chronograph, preserving the essential hands-on character and connection to the astronaut experience that defines the Moonwatch.

A Continuing Legacy: From the Moon to Mars and Beyond
Even today, the Omega Speedmaster remains an essential piece of equipment for astronauts. Its fundamental design has remained remarkably consistent, a testament to its timeless functionality. While materials and movements have been updated over the decades, the spirit of the original Moonwatch endures.
As Omega commemorates this 60-year milestone, the legacy of the Speedmaster is not just about looking back. It’s about the enduring partnership between human ingenuity and reliable engineering in the relentless pursuit of exploration. From the early days of the space race to the future of missions to Mars and beyond, the Omega Speedmaster is a reminder that some of the most advanced technology can still rely on the steady beat of a mechanical heart.
Discover Your Own Piece of Space History
The Omega Speedmaster is more than a watch; it’s a testament to human achievement and a tangible connection to the history of exploration. From the vintage charm of the “Ed White” to the technological prowess of the latest Master Chronometer models, the Speedmaster collection offers a story for every wrist.
For those inspired by this incredible legacy, there is no better place to explore this iconic line than at Buy Best Quality Watches . Our vast selection covers the entire spectrum of the Speedmaster’s evolution, from sought-after vintage references to modern releases.
Whether you are a seasoned collector or taking your first step into the world of luxury timepieces, our experts at SwissWatchExpo can guide you in finding the perfect Omega Speedmaster to start your own journey. Explore their collection today and own a piece of the stars.