Dive watches are typically made from stainless steel or titanium and feature a unidirectional rotating bezel, a screw-down crown, and a helium escape valve. The unidirectional rotating bezel is a key feature of a dive watch. It is used to measure elapsed time underwater. The bezel is marked with a series of numbers and can be rotated in one direction only. This prevents accidental resetting of the elapsed time. The bezel is usually made from stainless steel or ceramic and is designed to be easy to grip and turn even when wearing gloves. The screw-down crown is another important feature of a dive watch.
It is used to set the time and date and is designed to be water-resistant. The crown is usually made from stainless steel and is screwed down tightly to ensure that no water can enter the watch. The helium escape valve is a feature found on some dive watches. It is designed to release helium gas that can build up inside the watch during deep sea dives. The valve is usually located on the side of the watch and is opened and closed manually. In addition to these features, dive watches are also designed to be highly legible in low light conditions.
The hands and markers are usually coated with a luminous material such as Super-LumiNova or tritium. This allows the watch to be easily read in dark or murky waters. Dive watches are designed to be tough and reliable. They are tested to withstand extreme pressures and temperatures and are designed to be shock-resistant. Many dive watches are also designed to be anti-magnetic, which helps to protect dive watch the movement from magnetic fields. They are designed to be tough and reliable and feature a range of features that make them ideal for underwater activities.