Easy to use, good cord length. Adding pressure (small PSI correction) is done quickly in just a few seconds. But I'm giving it "1 star" for one reason - I only have it over against the "radiator" (as well as the image "quick cooling" and the image or warmth of "radiator") Bought other brands. When I unpacked it, I saw that the "radiatorβ part is not an aluminum radiator (as it looks in the photo) but simply a painted plastic imitation/fake. I think without that imitation/fake heatsink it could cool cheaper and faster than with that plastic crap.