U/V Spy Pen with Ultraviolet Ink and Blacklight

		List Price: $20.30 Buy New: $6.93 You Save: $13.37 (66%)
Invisible ink can only be read with built-in UV black light., Includes battery, WARNING: Choking Hazard - small parts. Not for children under 3 yrs (more)

via Kids Spy Gadgets: Kids Spy Gear http://www.kidsspygeartoys.com/SpyGear-166205011-B0006GKG66-U_V_Spy_Pen_with_Ultraviolet_Ink_and_Blacklight.html