Keep your secrets safe in the Invisible Writer Diary Set from IQ. Record your thoughts with invisible ink with this lockable, intruder-deterring diary. An included pen with a black light cap magically reveals the diary's writings, allowing no one to read it but you. This lockable diary comes with 2 keys and measures 5-1/4-inches x 6-inches. 3 button cell batteries are needed for operation (included).

• ScienceLAB IQ Invisible Writer Diary Set w/Invisible Ink Pen
• Keep your secrets safe in the Invisible Writer Diary Set from IQ
• Valuable component to a rounded STEM curriculum
• It is designed to peak kid's curiosity for the world around them. Wonder, discover and explore - real science...real learning

ScienceLAB IQ Invisible Writer Diary Set w/Invisible Ink PenScienceLAB