This Omega Speedmaster is a true marvel, you can tell just by looking at it. The case of this mens watch is made of tought stainless steel with a case thickness 12.2mm. It has a fixed tachymeter built into its bezel. This nice watch has a self-winding movement, which winds literally by the movement of your everyday life and will never require a battery. This Speedmaster to your left has the normal watch requirements, but if you take a closer look, you can see that it has three subdials to tell just where in time you are. The watch has a Hesalite Crystal which will protect your watch from everyday accidents. (Water reistant to 100 feet)