Penis Head Pump does what it’s intended to do – retain suction and create a vacuum-like chamber to suck whatever body part you can fit and seal inside the sleeve and the chamber. It works great as a nipple/aureola and clit pump, but only moderately well as a penis head pump (depending on how much you can withstand the tightness of the sleeve). A plastic pumping mechanism and a sleeve that seals but won’t choke would push my rating to 5 stars for this price point.
This looks like a great multi-tasker!