For those who travel frequently or work in various locations, the currency detector pen offers peace of mind. Its portable design allows you to verify the authenticity of currency . Simply the pen across the bill, and the ink will reveal whether the is or fake. This tool is indispensable for anyone who needs to ensure the integrity of their transactions. Features -Color:Black -Material:PP -Size:13.50X1.30X1.00cm/5.31X0.51X0.39in -Convenient portability: the portable design allows you to carry the pen in your pocket or bag, making it easy to test money wherever you are -Effortless use: featuring a waterbased ink core, this pen provides clear markings on for accurate detection - : simply mark the bill with the pen; a light yellow color indicates money, while brown to gray suggests it may be -Versatile applications: ideal for use in restaurants, retail stores, convenience stores, and markets, ensuring secure transactions in various settings - design: constructed with materials, this pen is built to last, providing reliable and consistent performance over time Package list: 5 x Bill Detector Pen