When Felix Baumgartner bailed out of a balloon at 128,000 feet and broke the speed of sound in free fall in October, this watch was strapped to his space-suit sleeve. So, yeah, it's pretty tough. It's also refined, with an El Primero movement that oscillates at 36,000 beats per hour, letting wearers time events precisely to one-tenth of a second. [$12,300; zenith-watches.com]