Some of us don't need much out of a watch to make us happy — understated good looks and a face without much flash are plenty. But there are some of us who need more, who find beauty in the sheer complexity of masterful watchmaking. The Tag Heuer Monaco V4 Tourbillon Watch is made with the latter in mind, as it features the world's first belt-driven tourbillon (the most complicated watch component around), all of which is fully visible through the face and case back. It also features a polished black titanium case, a beveled sapphire crystal, a sapphire case back, water resistance to 50 meters, and a hand-stitched alligator strap. So if you're the kind of guy who likes to keep things complicated, this watch has your name written all over it.