Perfect for all international super-spies and undercover operators, our 5 inch plastic spy pen features ink that is made of special high-brightness compounds that are invisible to the naked eye. But, the ink will magically illuminate when it is exposed to ultraviolet light.
Each pen has a blacklight conveniently located on the opposite end of the pen, allowing you to read any messages left to you by your spy friends. Perfect for writing down secret spy messages, scrawling secret grocery lists, or keeping a catalogue of all of your Internet passwords. And, believe it or not, a battery is included.
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