Hi Dixieland, if the pump is bought for erectile dysfunction and not penis enlargement , then the pump only has to be used prior to intercourse. The penis will stay hard enough for sex because the system comes with rubber penis rings and one is placed on the penis after pumping to keep the penis erect and the ring is worn during intercourse. After a while of using the system and as the penis is reconditioned, it may not be necessay to wear the ring.
kind regards
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