Seiko SpaceWalk

Not a collection, a single watch, and a remarkable one. The Spring Drive Spacewalk was designed specifically for use in space, and in 2008 it was carried to the International Space Station and worn by cosmonauts during a roughly five-and-a-half-hour spacewalk, with its performance verified afterward. A commemorative edition followed, limited to 100 pieces. It runs Seiko's Spring Drive movement, the glide-motion hybrid that's one of the brand's proudest technical achievements. Treat this as a historic one-off rather than a family, a trophy piece for a serious collector.