[Product Content] You Will Receive 4 Black And White Banknote Detector Pens.Each Currency Detector Pen Has A Size Of 13.5*1.5Cm And A Color Of Black And White, Which Is Suitable For Cash Register And Currency Verification. [Product Material] This Product Is Made Of Plastic Material To Ensure That It Is Lightweight And Durable.The Plastic Material Not Only Makes The Money Detector Pen Easy To Carry, But Also Can Be Used For A Long Time And Is Not Easy To Damage. [Professional Design] This Product Is Professionally Designed, The Black And White Color Scheme Is Simple And Generous, And It Is Easy To Use.The Banknote Detector Pen Has Good Writing And Erasure Performance, Is Suitable For Multiple Uses, And Improves The Efficiency And Accuracy Of Banknote Detection. [Widely Used] This Product Is Suitable For Cashier Work In Shops, Supermarkets, Markets And Other Places.Whether It Is A Small Amount Of Cash Or A Large Amount Of Banknotes, Verification Can Be Easily Completed To Provide Security For Your Transactions. [Easy To Use] This Product Is Simple To Use, Just Swipe Across The Banknote To Determine The Authenticity.After Using The Money Detector Pen, It Can Be Directly Put Back Into The Pen Case, Which Is Convenient To Carry And Store, Making Your Work More Convenient And Efficient.