The details though are what makes this such a successful tribute watch. Look closely at the tachymeter bezel and you’ll see that it reads “Base 1000” at the top right. This is straight off the 2998-1 bezel, with later bezels starting at 500 instead. It would have been easy to miss this, but luckily Omega didn’t. Also, the alpha-shaped hour and minute hands are accompanied by a bold “lollipop” seconds hand, with the large luminous dot at the tip. This is yet another flourish of the original watch that was important to get right (it’s worth noting that the very first 2998-1 had a slim, straight seconds hand, even if that’s not the version most coveted today).
Then there’s the movement inside: a caliber 1861 manually-wound chronograph. I know, you’re probably thinking to yourself something like “But the original moonwatches used the famous caliber 321 movement!” You’re right, but Omega hasn’t regularly cased up 321-driven Speedmasters since Lyndon B. Johnson was president and in 1972 NASA flight-Speedmasters equipped with the caliber 861 movement, which made their way into space on future missions. The 1861 is the direct descendent of the 861, with nominal differences, and Speedsmasters power by the 1861 are currently being used on the International Space Station for EVA (extravehicular activity), also know as space walks.