Features: 1.GREAT PROFITS PROTECTOR. This mini Bill Detector Pen can accuratelt check fake cash and avoid profit loss. 2.SIMPLE AND CONVENIENT USE. This dollar tester markers is equiped with an UV LED light, just lightly press then you can check whether is fake or real money. 3.MINI SIZE AND PORTABLE. It is designed with a clip, super convenient for you to carry and use. You can clip in your shirt's or pant's pockets, on your tie, belt, or put in your bag, etc. Won'for t take too much space. 4.WIDE APPLICATIONS. Highlighter, Anti-counterfeiting. Can write on paper, body, wall, pathetic, wood product, metal product, cloth, etc. Invisible ink can keep your message secret. 5.STYLISH AND PRACTICAL. Perfect for convenience stores, small businesses, garage sales, office desk accessories, selling for cars, farmers markets, retail stores, or others where you need to detect real money. Specifications: Material: Plastic Color: Silver Size: Approx. 13.2cm/5.20in Weight: Approx. 100g Package Includes: 1 Piece Bill Detector Pen note: 1.Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!