[Battery information] The battery is NOT in the delivery contain. You should buy the battery yourself. Besides, the power supply is 3 pieces of AAA batteries. So it's easy to use. [Interactive Toy] Get your friends to shock you with the truth or you can shock them with their own lies. [How to play] With a built-in lie detector, the shock game will display on a practical LED display with two settings, truth and lie, and a light-up spectrum to tell the truth of a response. [Best Party Toy] This is an interesting and little scary liar shocking game. You can test someone or your friends if they tell the truth in the truth or shocking game. It would be a great warm-up game at a party. [Notes] Not suitable for wearers of pacemakers, epileptics or the weak. The strength of the storm is limited in a safe area. That's why it's just for play, electricity will not really hurt you. Size16 x 16 x 7 cm Quantity1pcs Colour: White