With most high-end watches, you're lucky if you get a date function at all — and sometimes the magnifier over that single window can ruin an otherwise handsome face. With the Patek Philippe Annual Calendar Chronograph Watch, you get not only the day of the month, but the day of the week and the month itself, without any gross outcrops of extra glass. Other features include a 40.5mm steel case, a two-tone dial, an automatic movement, a day/night indicator, a three-layered chronograph with 12-hour, 0-30, and 30-60 minute readouts, and a stylish steel bracelet.
Ever since the original Milguass — a watch that dates back to 1956 — engineers and technicians have counted on it for its reliability, thanks in part to an internal magnetic shield that protects its movement. It's since been updated repeatedly, and in its latest iteration, the Rolex Milgauss Z Blue Watch it receives an electric blue face to complement its green sapphire crystal. Featuring a 40mm oyster case, the watch is waterproof down to 100 meters, and sports a hermetically-sealed screwed-down case back. The oyster case provides further protection for its self-winding mechanical movement, while the oyster bracelet gives you a secure and comfortable fit any time you wear it.