Mini Counterfeit Cash Detector includes an ultraviolet (UV) and magnetic (MG) counterfeit cash detector for 1996 series or newer U.S. currency (euro and pound also) in one convenient, lightweight device. Ultraviolet security markings are identified by pressing UV button to show vertical fluorescent security threads. For magnetic security threads, press the side MG button and rub the detector head firmly over magnetic areas (face, Department of Treasury Seal, bottom denomination border). The counterfeit cash detector beeps on magnetic recognition. Detector includes a portable wristband and four replaceable lithium batteries.