Description Money Counterfeit Marker Pen Checker Tester Detector Fake Bill Dollar Currency Description: brand new and high quality Features: Fast, reliable service. Highly effective and inexpensive pen. Used for detecting fake bills and deterring counterfeiters from passing fake currency. Small and compact for extreme portability. Perfect for all businesses. Specification: Dimensions: 133x15x12mm/5.24x0.59x0.47(approx) Color: Blue, Black, White Quantity: 1 pc Attention: 1.Mark the note, for example, with a for cross, in an area which is lightly-colored and not printed on. 2.If the marking shows up as bright yellow, your bank note is genuine and therefore valid 3.If the marking goes dark and stays dark, your bank note is forged 4.The marking disappears again after a few hours. Note: Transition: 1cm=10mm=0.39inch With retail package. Please allow 1-3mm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you Package includes: 1 x Tester Pen(other accessories demo in the picture is not included.)