# How to use a dive watch bezel Source: https://lumeandbezel.com/blog/how-to-use-a-dive-watch-bezel Published: 2026-10-09 Publisher: Lume & Bezel **Short answer:** Turn the bezel counterclockwise until the triangle or lume pip lines up with the minute hand. As time passes, the minute hand moves away from the triangle, and the bezel number it points to is the elapsed minutes. The bezel only turns counterclockwise so that a bump can only make the elapsed time look longer, never shorter. The rotating bezel is the most useful feature on a dive watch, and it works just as well on land. This page shows how to time a dive, a parking meter or a steak with the bezel, explains why it only turns one way, and covers what to do when a bezel is stiff or slips. It is for new dive watch owners with a Seiko 5 Sports, Prospex, Orient Kamasu or any watch with a 60 minute bezel. If you are still choosing a watch, see the [best dive watches under $500](https://lumeandbezel.com/best/best-dive-watches-under-500). ## What the dive bezel is for A dive bezel is a ring around the dial marked from 0 to 60 minutes, usually with the first 15 or 20 minutes marked in more detail. The zero point is a triangle or circle, often with a lume pip so it glows in the dark. Before a dive, a diver lines the zero marker up with the minute hand. Underwater, a glance shows how many minutes have passed, which matters for air supply and safe ascent. ISO 6425, the standard for diver's watches, requires a preselection device such as this bezel, with minute markings and protection against accidental changes. Read [what is ISO 6425](https://lumeandbezel.com/blog/what-is-iso-6425) for the full list. ## How to time something with the bezel 1. Note where the minute hand is now. 2. Turn the bezel counterclockwise until the triangle or zero marker sits exactly over the minute hand. Most bezels click in steps of one minute or half a minute. 3. Start whatever you are timing. 4. Read the elapsed time where the minute hand points on the bezel scale. If it points to 18, 18 minutes have passed. 5. For timing past 60 minutes, add an hour each time the minute hand passes the triangle again. ## Counting down to a deadline You can also use the bezel as a countdown. Say a parking meter runs out in 40 minutes. Turn the bezel so the triangle sits 40 minutes ahead of the minute hand. When the minute hand reaches the triangle, time is up. This is quicker than doing the clock math in your head. The same trick works for cooking, laundry, a meeting or a run. Some people set the triangle on the hour they need to leave, which turns the bezel into a simple reminder. - **Elapsed time:** triangle on the minute hand, read the minutes passed. - **Countdown:** triangle on the finish minute, done when the hand reaches it. - **Second time zone:** a 60 minute bezel cannot do this; a 24-hour GMT bezel can. See [how to use a GMT watch](https://lumeandbezel.com/blog/how-to-use-a-gmt-watch). ## Why dive bezels only turn one way Dive bezels are unidirectional: they turn counterclockwise only. If the bezel is knocked during a dive, it can only move the triangle backward, which makes the elapsed time look longer than it is. A diver who sees too much elapsed time surfaces early, which is safe. A bezel that could turn the other way might show less time than had passed, which could be dangerous. Some watches with dive style looks use a bidirectional bezel or a fixed bezel. These still work for timing on land, but they do not meet the ISO 6425 requirement. Listings for Seiko Prospex divers, such as the SRPK01, state a unidirectional rotating bezel. Note: A wristwatch bezel is a backup. Recreational divers rely on a dive computer and their training for dive times and decompression, not on the watch alone. ## Looking after the bezel Sand, salt and grime can build up under the bezel and make it stiff or crunchy. After salt water or a beach day, rinse the watch under fresh water with the crown screwed down, turning the bezel as you rinse. Dry it with a soft cloth. Do not use the bezel as a reason to open the crown or press buttons underwater. If the bezel slips past clicks, turns both ways or will not turn, the spring or click mechanism may be worn or dirty. A watchmaker can clean or replace it, often during a routine service. See [how often to service an automatic watch](https://lumeandbezel.com/blog/how-often-to-service-an-automatic-watch). [Browse Seiko dive watches](https://lumeandbezel.com/best/best-seiko-dive-watches) ## Common bezel mistakes Once you have used it a few times, the bezel becomes the quickest timer you own, with no phone or app needed. - **Lining up with the hour hand.** The triangle goes on the minute hand, not the hour hand. - **Reading the wrong scale.** Read the bezel number the minute hand points to, not the dial's own minute track. - **Forgetting to reset.** An old setting can look like a live timer. Park the triangle at 12 when you are done, or line it up fresh each time. - **Half clicks.** On a 120 click bezel each click is half a minute. Make sure the triangle sits squarely on the hand, not one click off. - **Turning it the wrong way.** If the bezel will not move, you are probably turning it clockwise. Turn it the other way. ## Frequently asked questions **Which way does a dive watch bezel turn?** Counterclockwise only on a true dive bezel. That way a bump can only make the elapsed time look longer, which is the safe direction. **What is the triangle on a dive watch bezel?** It is the zero marker. You line it up with the minute hand to start timing. On many watches it has a lume pip so you can see it in the dark. **Can I use a dive bezel for a second time zone?** Not well. A 60 minute bezel only tracks minutes. A 24-hour GMT bezel, like on the Seiko 5 Sports GMT, is made for time zones. **Why is my dive bezel hard to turn?** Dirt, salt or sand under the bezel are common causes. Rinse it in fresh water while turning it. If it stays stiff, have a watchmaker clean it. ## Gear guides for this topic - https://lumeandbezel.com/best/best-dive-watches-under-500 - https://lumeandbezel.com/best/best-seiko-dive-watches - https://lumeandbezel.com/best/best-dive-watches-under-1000