This is the most disgusting product I have ever seen in my life. 1. The air assembly cannot be securely attached to the pump. Looks like a size difference. 2. The battery could not be securely attached to the pump base. It looks like the 2 spring tabs in the battery compartment are misaligned or broken. So when you turn on the pump, both the air hose and the battery just fell off. It is obvious that the products did not pass proper quality controls or were not tested at all before shipment. Absolutely reluctant to give 1 star as required by Amazon.