Thames & Kosmos Spy Labs Invisible Ink Pen & UV Light in Black

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Description

This invisible-ink pen is the right tool to equip your aspiring detective with the hunt for evidence or reading secret messages. The pen uses a special ink that only becomes visible under ultraviolet light, like the one emitted by the flashlight on its opposite end. They can also use the UV light to find other objects and materials that glow. Warning: Choking hazard. Small parts. Not for children under 3 years Ages 8 and up Requires 1 AAA battery (not included) Plastic Imported