The packaging shows the four easy steps to use the Perfect Stroke. A vent at the end of the hand-held device creates a very strong vacuum that can be used on erect or flaccid penises.
That suction power is no joke. I found it to be a little too strong after a little while, however with the release valve it was not a problem at all. A quick pinch and the pressure would back off just enough to be just right again.
The complete kit comes with a powerful bullet (batteries included!), a small package of lube and last but certainly not least, a free movie download. That really does feel like a complete deal.