Specification: Item Name: Invisible Ink Pen
Size: Length: Approx. 13cm / 5.12
Package:1 pcs Invisible Ink Pen
1) Write invisibly secret messages, security markings etc. and only when you shine the light on the message you will reveal the secret behind.
2) The spy pens have the UV light installed in the cap so you dont need to buy a spare light, which also comes with battery in it, very convenient to use.
3) Harmless and flavorless ink, you can write everywhere: T-Shirts, paper, skin and any surface.
4) The inks is durable but washable, very safety to use.
5) Invisible Ink Pen only, other accessories demo in the picture is not included!