The Triple Calendar Masterpiece
The Omega Speedmaster Day-Date, often referred to as the “Triple Calendar,” is one of the most mechanically dense and functional models in the Speedmaster family. While the Moonwatch is famous for its history, the reference 3523.30.00 is celebrated for its sheer utility. It manages to display the time, day, date, month, and a 24-hour indicator, all while maintaining the iconic chronograph DNA that has made the Speedmaster a legend.
Contemporary Industrial Aesthetic
This 2000s specimen features a striking monochromatic silver dial that offers a clean, technical look. The sunburst finish on the dial adds depth, catching the light across the various sub-dials and the outer date track. Housed in a robust 42mm stainless steel case and paired with the original integrated steel bracelet, this watch provides a substantial and modern presence on the wrist. It is a timepiece that balances its complexity with a refined, architectural elegance.
Technical Prowess: Kaliber 1151
Powering this mechanical calendar is the Omega Caliber 1151, an automatic movement renowned for its durability and complexity. Based on the proven Valjoux 7751 architecture, it is a workhorse that watchmakers respect for its reliability. The technical performance of this specific watch is excellent; with a high amplitude of 279° and a very low beat error of 0.3 ms, it demonstrates strong mechanical health and readiness for daily precision timekeeping.
| Position | Rate | Amplitude | Beat Error |
| Dial Up | -6 s/d | 279° | 0.3 ms |
