Packing: 15 * 9.3 cm Pen length: 14.5 cmYou can say to your friends; What do you help me to write what word ! I forgot how to write. And then your friends will naturally take a finger down the press! A: wow! Electricity the haha mommy! Think that is a what look! It's certainly not a harm to human body! Small current! At the tip of ball-point pen head can rotate. Can be used as a normal pen! Whether very hate someone touch your things， well， people use the electric pen right now， you can use it normal writing， others use is electricity.Warning: (1) the product itself for safety， generally will not pose any harm to human body， but the effect of the adventurous and exciting may cause some discomfort or disgust. Use please see objects to discriminate different look. Otherwise the consequence is proud. (2) with electric products for by electricity with an easy to broken in ground， please note that there will be consequences.