You set this device by placing a plastic cap on the brass bolt, then pull the detonator back, close the lid and then place it under something with weight like a bag, book, glass, can, shoe, etc. Or imagine under a can of coke, a toilet lid, a soap, a pack of cigarettes, etc.
When someone lifts the object, the detonator fires the lid making a loud noise. Scare the victims of life!
The device uses plastic caps to produce the explosion (not included).
Great joke to use under any object that is heavy enough to weigh it.
The device is 3 cm long by 0,9 cm wide by 0.9cm high so it is easy to hide it under objects.
DEVICE ONLY - TAPAS NOT INCLUDED (You can buy them at any good joke shop