MACHINES MORE CRAZY PRANKS -- You will get pranks PCB noise maker, which is the ultimate gag gift or revenge pranks, simply activate the noise maker and hide it; It will beep, screech, or make a cricket sound at random intervals of 5 to 30 minutes, a good April Fools Day prank for your friend or coworker.This PCB battery lasts 3+ years, before it runs out of power, your victim's sanity will fail.COMPACT AND LIGHTWEIGHT -- This small annoying sound device can hide easily in most places; You can even use a small sticker to attach it to the back of the plant leaf; Once set and hidden, the sound from the interval upsets him/her and can't help but want to find it;As long as it hides well enough, no one can find it; Before finding it, the people who are looking for it will growl and become furiousUNIQUE SOUNDS -- You're not stuck with just one choice of annoying sounds. With the press of a button, you can easily change the sound. Noises include: a normal beep, a high pitch screech, and a cricket chirping. Take the crown as funniest prankster on April Fools.HIDDEN HINT -- (Mimic) hide it near the electrical appliance that emits a beeping sound. Such as the vicinity of TV sets, refrigerators, air conditioners. (Unexpected corners) such as under the table and chair, the back of the potted plant, in the air-conditioning hole, near the exhaust port, near the pile of debris, above the chandelier...(Impossible places) such as: the top of the car glove box, inside the mattress or sofa, in the wooden floor or in the wall of the brick mezzanine...MORE CRAZY EFFECTS -- This can satisfy pranks with different voices in different positions at the same time. Make the victim more irritable. If not enough, you can also buy multiple sets