This mini scuba tank it is great in holidays at the seashore because you can see the underwater environment and swim with the fish. It’s very light and compact, very easy to use, and you can breathe underwater for 5 to 10 minutes, depending on your physical activity.
Another advantage is that you can easily change an empty tank by a full one, so that you can dive several times.
The only inconvenient that I see is the price.
Great for water activities definitely.