Wholesale Secret Spy Pen with Hidden Decoder

Spy pen is designed with invisible ink that becomes visible only under the built-in UV decoder light. Each pen writes with clear ink, allowing hidden messages to remain unseen until illuminated by the light embedded in the pen cap. The pens are available in assorted transparent colors including green, yellow, blue, and red.

This secret pen supports interactive writing and message concealment, making it suitable for novelty use, classroom activities, and creative play. The UV light is powered by ...