I ordered this balloon pump and i don't recommend it at all. You need to put your finger on one side in order for it to work, otherwise it won't inflate the balloon. I've bought several pumps in the past and this is not required in any of them.
Better to buy the bigger pump.

Good thing!
Thanks to the seller!

the parcel has arrived, the device is working, loud but powerful. I put a minus for transportation, the box arrived torn in a cloud, the pump itself was all dirty, it seems to have been hanging in the warehouse without packing for several years. but does its function, it is important

Looks very high quality

Excellent Device, strong
Volume balloons quickly