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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.
Button batteries are easily swallowed and can cause serious harm.
Check battery cover is secured correctly before use.
Keep batteries away from children.
Not for children under 3
Dimensions: 14.5 cm × 1.4 cm × 1.8 cm