Whether you're raising a young Sherlock Holmes or a future James Bond, your little investigator needs the high-tech help of an invisible pen and UV light to reveal evidence and complete secret missions.
This pocket-sized pen is perfect for stealthy invisible message writing on the go. And the UV light illuminates other items that glow!
Requires 1 AAA battery (not included).
Thames & Kosmos was founded in 2001 by a science museum director and her son, who saw the great need and demand for better science education materials — resources for parents and their children that are more engaging, more effective, more relevant, and more fun.