Would you like a bigger penis and a harder erection? Then this penis pump is definitely for you! This pump is easy to use. Turn the top cap and remove it to reveal the battery compartment. Insert 3 AAA batteries (not included) and put the cap back on the pump. Choose between 3 different intensity levels that gradually increase in intensity. Go through the intensity levels by pressing the on/off button. Once all three levels have been completed, the pump switches off automatically. Once switched off, press and hold the vent button to reduce the suction and gently release the seal. The pump is also transparent and equipped with measuring lines for tracking progress. The top and silicone opening can be easily removed for cleaning. Use lukewarm water and a toy cleaner. Please note: the top of the pump is not waterproof.