Everybody is happy to store money, but the nitrogen stored in the body during a dive is like a debt for a diver.
It can be said that a smart diver's manners are to enjoy diving while not storing nitrogen (debt) as much as possible.

In this course, you will lean the know-how on absorption and release of nitrogen required to freely use a dive computer and how to use a dive computer.
In practice, let's actually use a diving computer and experience its amazingness.

There is also a dive computer that can be used as a clock in everyday life, so wear your favorite design and function to appeal diver even in the city.
If you have friends who are interested in dive computers, take them to the ocean on the weekends to make him a diver and brag about your dive computer's awesomeness.