Długopis z niewidzialnym atramentem w Gearbest

Długopis z niewidzialnym atramentem w cenie 0,99$

Kod rabatowy:

HNYear131

Podstawowe informacje:

It writes with invisible ink made of special high-brightness ultraviolet viable compounds. This means the ink is completely invisible under normal light! Once the message has been written in invisible ink, it is time for the blacklight. So technically it is not really a BLACK light, but that’s the popular term for ultraviolet energy. Near the visible spectrum of light. Flip the pen over, shine the light on the spot where the ink was used and your hidden message will be illuminated.

Main Features:
● You can use it to make a joke with your friends, that will be interesting
● Powered by 3 x AG3 button batteries (included)