Great fun for budding secret agents! Use these pens to write messages which can only be seen under the pen's UV light. Write a message with the special, invisible ink, then use the secret light in the lid to reveal the message!
Pack includes a red and a blue pen which each write with invisible ink.
Each pen uses 3 LR41 Lithium batteries (included) which can be replaced by unscrewing the pen lid when necessary.
Brand: Rex London
Manufacturer's Recommended Age: 5+
In stock, immediate despatch