Write secret messages, reveal hidden clues, and experience the thrill of uncovering hidden mysteries with this invisible LED pen. Write down your confidential notes, private messages, or engage in exciting spy games without revealing your secrets to prying eyes. When it's time to reveal your hidden messages, simply activate the built-in LED light with the help of the on/off button on the cap. The powerful illumination exposes the invisible ink, bringing your words to light and unveiling your concealed messages. Available in 6 assorted colors: Blue, Yellow, Pink, Purple, Green, Red. 24 pieces in a cardboard displayer (7.2x7.2x9.25) at no charge. ABS.