Serious scuba diving entails more than just the basic gears of the beginner diver. The diver needs more than just his set of mask, fins, regulator, oxygen tank, and wet suit to ensure the divers safety.
For external data that the diver should know, the assistance of a diving computer is essential. The diving computer provides information on the amount of time needed for decompression and even the depth of the dive itself. It also gauges data such as the levels of nitrogen content in the bloodstream, or decompression sickness that could be fatal to the divers life.
It would be wise to compare brands of diving computers before actually making a purchase. Aside from considering factors such as cost, quality and accuracy of the machine should also be weighed out. One effective way of doing this would be to search for reviews of the products and gather consensus of those who have bought and used it in their dives.
After buying ones personal choice it would be prudent to study and understand the features and commands of the equipment. It should be known by heart, in the same way that a beginner is trained to deal with various situations that can happen to him...