Dive computers come in many designs. Whether you are looking for a console, or wrist-mount, or wristwatch-style computers. For many people, an ascension rate monitor may be the most crucial reason to buy a dive computer. Every diver and even non-divers knows the risks of coming up too fast, and every diver does all they can to keep within the safe limits. The normal display features any good dive computer should show you the basics at a look, are maximum depth, current depth, dive time, and no-fly/no-stop time.