In the extreme seabed environments, a reliable dive watch is an important guarantee to control the return time. But not all the watches that can be waterproof can be called a standard diving watch. A simple waterproof function does not make a professional diving watch.
But what makes a professional diving watch? NIHS gives you the answer.
1 Safety device for controlling diving time
NIHS Standard requires that a diving watch must have safety device to control the diving time. In addition, in order to prevent the interpretation errors, the device must also be accompanied by a design that prevents inadvertent rotation.
2 Clearly legible
Hour markers, rotating inner diving chronograph, movement must be legible even in the dark deep sea. Commonly the legible distance between eyes and the watch are set at 25 cm. Among the watches, the fluorescent processing is the most common solution.
3 Waterproof and resistant to salt water
In order to ensure that the watch core components and strap do not change in brine environment, the watches are equipped with waterproof pad in the case back, and the cover and mirror are adjusted to increase the thickness. NIHS standard also requires a diving watch case water resistance to 100 meters.