Q1 :It responds pretty well immediately as the air is evacuated
Q2 ; It retracts almost immediately- disappointingly.
Q3 : Can't say I noticed either way. Guess an SP needs to answer this.
it’s only something I use in civvie life, anyway
Q1 I’ve found taking a longer time over it it produces better results to start with, and top it up so to
speak during the session
Q2 Results have lasted anything from 10 mins to 30 mins (can’t be exact as was otherwise distracted lol)
Q3 Sensitivity etc heightened massively!
There’s quite a few pumps on the market it took me a third purchase to find one suitable fit and produce the results I wanted.
Hope this helps