A dive watch is a type of wristwatch designed to support underwater activities like swimming and scuba diving. It is made with a water-resistant case and a rotating bezel, which allows the wearer to measure elapsed time while submerged. Dive watches typically feature a larger face, highly visible hands, and a unidirectional bezel to prevent accidental rotation. They are built with a strong, scratch-resistant material and are designed to withstand extreme temperatures and pressures. Some models come with additional features like a backlight, a magnifier, and a helium escape valve to support deep dives. Dive watches are essential for any serious diver, providing a reliable timekeeper and a trusted companion underwater.