The Ylvi secret message pen writes with invisible ink that only becomes visible when illuminated with the star topper's UV light. Batteries included, which are not replaceable.
The Ylvi secret message pen writes with invisible ink that only becomes visible when illuminated with the star topper's UV light. Batteries included, which are not replaceable.
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The Ylvi secret message pen writes with invisible ink that only becomes visible when illuminated with the star topper's UV light. Batteries included, which are not replaceable.
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