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currency counterfeit detector
*cellular pen is equipped with a flashing LED that falshes whenever your phone receives or sends a singal.
*the UV light can also be used as a flashlight or currency counterfeit detector.
*the product uses 3 AG3 batteries.
*to change batteries, unscrew the upper body, insert the batteries with the negative(-) pole first.
*the link cartridge is replaceable.
*Pls refer to figure on left.