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Multifunctional Invisible (UV Reactive) Ink Pen
Product Description
![Multifunctional Invisible (UV Reactive) Ink Pen Multifunctional Invisible (UV Reactive) Ink Pen](https://sep.yimg.com/ay/yhst-39083765508394/multifunctional-invisible-uv-reactive-ink-pen-8.gif)
Features:
- the words you write are invisible in normal daylight but are revealed under the light of the pen
- can be used to detect counterfeit money
- suitable for a variety of fun applications: secret messages, security markings, party gadget, ...