Diving watch can be called a diving watch, you must have anti-corrosion, luminous display, waterproof depth of 300 meters above, the most important design for the rotating bezel. Do not think it's just a diving watch, but it plays an important role in diving, remind you of the remaining diving time to accurately calculate the safe residence time in the sea. Professional diving watch rotating bezel Rolex ceramic ring material is the most widely known, can effectively withstand the pressure of the sea and anti-corrosion wear. Diving watch bezel must be one-way counterclockwise rotation and safety lock device, the purpose is to prevent inadvertently in the diving process, and then assess the diving time, but also help to avoid divers due to oxygen shortage / floating too fast and lead Decompression sickness and other dangerous. Rotating bezel marked scale 15,30,45 designed to correspond to the supply of oxygen cylinder does not exceed one hour design, also means that the time in the water will not exceed 45 minutes. Rotating the bezel as long as the use of water before each turn, turn the bezel minute scale on the Huai minutes hand, read the minute hand to go through the outer bezel time, you can know the time has passed. Countdown time is used to pre-calculate the time it takes before proceeding. For example, the current time is 12:10, the activity time is 45 minutes, and the diamond mark is rotated to 12:55 on the scale of face plate. When the time comes close to the diamond mark on the 15-minute scale, representing the time is coming to an end, the diver must stop diving and strive to gradually rise out of the water within 15 minutes decompression, which is why the rotating bezel 0 -15 minute scale must be specially identified reason. Of course, not everyone has the opportunity to dive diving watch into the deep sea, so rotating bezel even for general daily timekeeping, but also as two time functions, multi-purpose design can be said! This article is reprinted from the world watch, if you have any questions, please send an email to wbsj@wbiao.cn to contact us.