Suitable for spearfishing.
Completely silent during the dive.
It has a system that does not require you to manually remove the water that remains inside the chamber, like in older models. As soon as you reach the surface, you take a breath and you're ready.
In terms of quality, it is quite good, I have not found any material defects. Of course, we take care not to throw it away or leave it exposed to the sun with the saltwater, and always rinse it when we return home.
The prices are generally high, unfortunately, but at least you are paying for something very reliable and functional.
Do not buy it if you only plan to use it for two dives and then stop.
On the other hand, if you have someone who is generally afraid of masks and does not want to drink water, etc., I consider this to be the suitable purchase. However, if they learn with this one and then switch to a regular one, they will drown.
They will have gotten used to a system that automatically removes the water. So, be very careful.
I hope I helped you