The pen is made of plastic and the pen' ink is made of special high-brightness compounds that are invisible to the naked eye, but magically illuminate when exposed to the attached ultraviolet (UV) light.

 

When your secret messages, codes, diagrams, etc. Are written with this special UV pen they will be invisible to the naked eye.

 

The message can only be seen under the light of our UV light. It is the smallest UV light in the world so it can be easily carried and used without the knowledge of those around you. Your messages can be written on paper, metal, plastic, or skin. Your secret message written with this pen will be invisible to the naked eye - It can only be seen with the UV Light.

 

 Feature: 

1) marking your belongings in case they're stolen, 

2) keeping your computer passwords secure, 

3) sending secret notes, 

4) making "special" diary notations, 

5) recording pin numbers and access codes

The item is without battieries.