Features: and high quality INSTANT DETECTION. This money detector marker is specially formulated to deliver accurate and easy results within seconds. Detect counterfeit bills quickly with a professional bill detecting pen. SAVE MONEY. Check and reject counterfeit currency using the bill marker. Help protect your revenue from fraudulent bills over time with this reliable counterfeit detection pen. COMPACT AND PORTABLE. Total length is 5.3 inches, small and lightweight, fits easily into your purse, pocket, handbag, etc. WIDE APPLICATION. Suitable for use with various types of currency. Widely used in shops, supermarkets, bakeries, cafes, grocery stores, clothing stores, bookstores, and shopping malls. EASY TO USE. Simply draw a line on a banknote. If the bill is genuine, the ink will remain unchanged. If the bill is counterfeit, the ink will turn dark and disappear within seconds. Specifications: Material: Plastic Color: Blue; Black; White Length: Approx. 13.5cm / 5.31in Weight: Approx. 17g Note: 1. Please allow 0-1cm error due to manual measurement. Please ensure this is acceptable before purchasing. 2. Due to differences in monitor displays, the actual color of the item may vary slightly from the images shown. Thank you! Package includes: 1 Piece Currency Detector Marker