An incredibly cool video went online the other day on the Slo Mo Guys YouTube channel. The guys (Gav and Dan) used insane equipment to get the frame rate to 10,000 and the magnification to 10x for some seriously close and slow footage inside the miniature marvel of Omega’s caliber 1869. That’s right—they used the Omega Speedmaster Dark Side of the Moon Apollo 8 as a subject for their slow-motion video.

The video shows you how the gears of the caliber 1869 engage, with and without the chronograph activated. It’s stunning!

Check out their other videos as well here.

*Head image is a still from the Slo Mo Guys video.