Viiart&reg; Electric Shock Metal Pen Adult Joke Gag Prank Novelty Trick Funny Toy Gift Looks like a fancy ball point pen that will give your friends a shocking experience when they try to use it. Size: 144mm x 12mm. Powered by 3 x LR41 battery.(Included) Not recommended for children under 14 years old, adults over 50 years old, people with medical conditions, or people with Package Included: 1 x Electric Shock Pen