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Money Detector Pen Bank note Tester Pen fake note Cheeker Wide application, can be used to verify multinational banknotes, including Pound, Euro, Dollar, Peso, Yen, Won, Rand, Ruble, Peseta, NT Dollar, Baht, etc. Easy to operate, just need to mark the note with a cross, for genuine bank note, the mark is bright yellow; For forged bank note, the mark goes dark and stays dark. Versatile double head design, one for the water-based banknote tester pen and the other for the ball-point pen, more practical. Identify bank note in seconds, ideal helper for cashiers. Small size and portable, can be put into a bag for carry outdoors.