Invisible to the naked eye & message can only be seen under the light of UV light
Emergency Light Can be written on paper, metal, plastic
Made of plastic &Easily carried & batteries included.
Boys Girls Great Party bag fillers toys for kids
Details: Accmor 4X UV Light Pen Invisible Ink Security Magic Marker, Spy Pen with Built in Ultra Violet LED Light Magic Pen
Features This cord winder isn't just a winder, can be use as Key chain, Bookmarks, and so on. Cord winder is the smallest, simplest, fastest way to store your earbuds tangle-free, and more. "UV light is also useful for detecting counterfeit bank notes. Suspect someone is stealing cash? Simply use the pen to make a distinguishing mark and use the UV light to make checks." Invisible ink pens are great for marking all kinds of surfaces and applications, especially paper.
Specifications: Colour: Blue, Purple Red, Green
Note: Please note ink color is the same in each pen just the pen casing that is different.