I had my doubt before ordering this portable air pump but, now I'm so glad I purchased it. The little pump is amazing. The air pump is very quiet and very fast. You can set the poundage you need and when the pressure value reaches the preset value, it automatically stops. It also comes with an LED flashlight at the end of the pump for nighttime use! It recharges quickly and holds a charge for weeks so far. Love this air pump and it's worth every penny. Recommend highly for easy portable air!