Spy Pen:The ink is invisible after you write with it,unless you light on the cap blacklight to see the secret message perfectly. Invisible Ink Pen
Spy Pen:The ink is invisible after you write with it,unless you light on the cap blacklight to see the secret message perfectly. Invisible Ink Pen
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1.MAGIC PEN: After writing with the pen, the ink will not be visible. You need to turn on the purple light on the cap to illuminate the writing area,
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Spy Pen:The ink is invisible after you write with it,unless you light on the cap blacklight to see the secret message perfectly.
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Spy Pen:The ink is invisible after you write with it,unless you light on the cap blacklight to see the secret message perfectly.
DLUCKY Invisible Ink Pen,Spy Pen Invisible Disappearing Ink Pen with Black Light Magic Marker for Secret Message and Kids Party Christmas Halloween