Please, let me know via email when the new review on this product is available.
This pump works acceptably well in producing a full erection quickly and easily. For men of average (or below) size, it makes a great first pump.
There are probably better items out there, even in this price range. I will give it a few more rounds and see if there is a mastery that comes with experience like most things. Not sure I would recommend product based on lack of documentation.
This toy is nothing to incredible but it does suck your dick and it can be fun to stretch your dick to the max.