Main Features:<br />Magic invisible ink pen with special light<br />Application: Secret messages? invisible tattoos? fantastic drawing in the darkness? perfect secret? personalized objects? highlighter? anti-counterfeiting<br />Able to write on paper? body? wall? wood product? metal product? cloth? etc.<br />Powered by 3 x AG3 cells (included)<br /><br />    Specifications<br />General<br />  Power Supply: 3 x AG3 button cell                                                  <br />                        Material: Metal                                                 <br />Dimension and Weight<br />  Product weight : 0.012 kg                                                  <br />                        Package weight : 0.067 kg                                                  <br />                        Product size (L x W x H): 13.5 x 1.3 x 1 cm / 5.31 x 0.51 x 0.39 inches                                                  <br />                        Package size (L x W x H): 18 x 8 x 3 cm / 7.07 x 3.14 x 1.18 inches                                                 <br />Package Contents<br />  Package Contents: 1 x Invisible Ink Pen with Special Light                                                 <br /><br /><br /><br />                                                                                            <br />