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Set of 7 Invisible Pen Maker Kids Message Pen with Built in Light

Feature:

Color: black, blue, red, green, purple, pink, yellow

Ink properties: Invisible ink

Style: cartoon

Specifications: 13.4cm

Use the ink pen to write secret words or messages, the writing will disappear when the ink is dry.

Only when you shine the light on the cap to them, the secret behind reveals

For saving batteries life, plug the write card tag back to the pen when you don't use the light

Please don't shine the light directly to eyes

Package Content:

7 pens

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