For a wedding I wanted to fill several hundred balloons. These small camping air pumps not enough pressure (probably at least 50 mbar necessary) for a balloon. Compressors for compressed air have indeed enough (too much) pressure but provide only small amounts of air to the compressor is empty (and then it is known to be very noisy, nothing for the apartment). This balloon pump has both sufficient pressure as well as a high throughput. A balloon takes about 1 to 2 seconds. Switched on, the pump is simply by applying slight pressure at the site where the balloons are recognized - very convenient.
One point deduction is available for the very powerful engine, which is not however regulated. The performance is in particular for small balloons very high if you are not careful to burst the balloons quickly.
I had to send back because the real purpose (the wedding) fell into the water.
