Rex London Invisible ink spy pens (set of 2) – Secret Agent Discount

A fun gift, budding secret agents can use these 2 pens to write messages which can only be seen under the pen’s UV light.

• Step 1: Write a secret message
• Step 2: Use the secret lamp in the pen lid to read the message

Each pen uses 3 LR41 Lithium batteries which can be replaced by unscrewing the pen lid. Remove the white caps from the pen nibs before using for the first time

Warning:

• Button batteries are easily swallowed and can cause serious harm.
• Check battery cover is secured correctly before use.
• Keep batteries away from children.