This electric hand buzzer toy is made of plastic and metal material which can use for a long time and will exist a slight of electricity, but its harmless to human body. This electric hand buzzer toy is funny you can get lots fantistic laughs with this trick toy. Hide this in your palm and surprise others when they shake hand with you. A perfect tool for quieter students - buzzers are loud enough to get the attention of the class. The electric hand buzzer is ideal prank gifts for kids,colleague,family.It is also great prop for birthday party,Halloween,April Fools" Day. Including 4 hand shockers. Color will be send randomly. Small size and lightweight, easy to carry, playing pranks at anytime and anywhere. When shopping, please pay attention to the size and dimensions of the product to ensure that it meets your needs. In the title and , we have provided detailed information about the product, including its features and specifications We want you to be completely satisfied with your purchase, so if you have any questions or concerns, please don't hesitate to contact us. We are here to help and will do our best to assist you. Thank you for choosing our product. We hope you enjoy it!