Invisible ink can keep your message secret. Words visible under the UV light.
- It writes with special ink which is invisible in normal light.
- Flip the pen over, shine the light on the spot where the ink was used and your hidden message will be illuminated.
- It can be used on any dry surface, such as wood, glass and metal.
|Battery||3 x button cell|
|Package Contents||3 x Invisible Ink Pen|