2. I know some people will say gear solution to skill problem, but I will ask anyways. I am going to be doing diving courses with instructors and would like to start getting into good habits. One of the bad things i can see myself doing, is losing track of time. There is a lot going on underwater and a lot to keep in mind and constantly think about. Is there any sort of watch that allows you to set an vibrating alarm for every 3-5 min or something? I can see this being a good way to get into the habit of checking air/computer/time. Just like bad habits, once you start good habits, it's hard to break them. Over time, the alarm wouldn't be needed.