I have question.

Everybodi tolk about sensational feeling provided by pulsating pump.
I don't understand. Is pulsation mean:
1. Just automatic adjust of vacuum (few times in minute, or less) or
2. Continuously automatic adjust of vacoom (few times in second)

I believe, is possible both but, I vant to know
what is pulsation (1 or 2) when You (satisfyed customers) tolk about "sensational feeling"?


In advance, thank You for answer.