ZL-138D Syringe Style Hidden Highlight Ball Point Pen w/ 1-LED Purple Light - Pink + White
Creative and unique; With purple LED light on the top individual switch powered by 3 x AG3 batteries replaceable; When you write something down with this pen you can't see anything but if you switch the top light on you can see it; Great and magic; Also the light can be used to check money bill and other documents; Comes with two highlight refills