The Hyper Aqualand is not a dive computer, rather a depth gauge and bottom timer. It has a few features that are similar to computers but not the same. It will NOT prompt you for the safety stop, but it will warn you if you are ascending too fast....it is not meant to be a dive computer.
I use mine as a backup bottom timer/depth gauge for my Atom and my spg, and will treat as that only. The main attraction for me on the watch is the fact that you can download the dive profile, I use it in my logs for that.
You are better off getting a proper dive computer, either AI or non and using this as a watch and dive watch.