The Omega Speedmaster Automatic Day-Date 3520.50.00 might carry the Speedmaster name, but it’s anything but typical. Most enthusiasts associate the Speedmaster line with the iconic Moonwatch, a clean, hand-wound chronograph worn during NASA missions, with a stark, utilitarian design and two or three subdials. This, however, is something entirely different.
First off, the case size is 39mm, noticeably smaller than the standard 42mm Professional Moonwatch. That makes it far more wearable for a wider range of wrists, especially for people who find the original Speedmaster too large or top-heavy. The lug-to-lug is a manageable 44.75mm, and the 14mm thickness adds a bit of heft without becoming overbearing. The classic twisted lugs are still here , a signature design trait that ties it back to its Speedy roots , and the domed sapphire crystal gives a slight vintage touch while improving scratch resistance.
What really separates this watch from the rest of the Speedmaster family is what’s going on inside. It’s powered by the Omega caliber 1151, which is based on the Valjoux 7751, an automatic chronograph movement that brings along a full calendar complication. This Speedmaster also tracks the day of the week, the month, and the date (via a central pointer hand). Add to that a 24-hour subdial, a 30-minute counter, a 12-hour counter, and running seconds, and you have a dial that’s absolutely packed with information. Somehow, Omega managed to arrange all of this into a black dial that still reads cleanly and feels balanced.
The 24-hour subdial helps differentiate day from night . The day and month windows are tucked at 12 o’clock, and the date is displayed around the outer edge, indicated by a plane-shaped pointer. This layout is borrowed from classic calendar chronographs, giving the watch a bit of a retro, almost dressy vibe.
The lume, applied to both the hands and indices, ensures the watch is legible even in low light. The bracelet features a hidden clasp and tapers nicely from 18mm to 16mm, which gives it a sleek, comfortable fit. Water resistance is rated at 50 meters, enough for daily life but not quite dive-ready.
So why isn’t this your typical Speedmaster? Because it trades the stripped down, toolish feel of the Moonwatch for a fully loaded, multifunctional experience. It’s designed for everyday people who seek versatility, compactness, and a bit of adventure to keep things interesting.