Comedy Bulb

A light bulb held by the magician lights at his command. No wires.
You can use the bulb to find a forced or marked card, you can use it to ask questions and turn it on when they answer yes and off to the no , you can use it as a gag putting it on the head, etc.. Use your fantasy.

It is 11.5 cm long and the bulb has a diameter of about 6 cm. This model allows you to change the battery, once discharged.