2 In 1 UV Black Light Combo Invisible Ink Pen
This 13cm fine point marker is loaded with special ink that is only visible under UV light.
It includes a mini UV LED (black light) in the cap so you can view your messages.
Field puzzle/ gadget cache setters love them for writing secret messages & notes on or near a cache
You can also mark your personal property with your house number and postcode in case of theft.
Push the button to switch on the UV light to view your invisible messages.
- Type: Ink Pen
- Cover Material: Plastic
- Pen Colour: Blue yellow, green or purple
- Ink colour: Ultra Violet
- Size: 13cm x 1.8cm (Approx.)
- Note: The ink is permanent and cannot be erased
- 1 x Invisible Ink Pen
- Batteries included
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