"Best Quality High Power Electric Balloon Inflator Air Pump for Foil Balloon and Other Toy Accessory and Wedding Party Pink Medium... Operate explains (half automate model): 1.) Open the cover board and take out electric wire 2.) Connect the AC plug with the socket 3.) Put the switch ""I"" 4.) Put the balloon on the inflate port 5.) Press down the inflate port the micro-switch open up motor start-up the balloon inflatable end of inflate. Operate explains: 1.) Open the cover board and taken out the electrical wire 2.) Connect the AC plug with the socket. 3.) Put the switch to ""II"". 4.) The Balloon Inflatable end of inflate. Special Explain: To inflate lesser balloons Tweak off the movable nozzle connect the nozzle up to the venthole"