This bill detector can identify counterfeit banknotes in less than one second and is portable, weighing only 30oz and powered by a 100-240V input power adapter or a rechargeable 3500 mAH lithium battery. It has 7 detection methods, including UV, MG, IR, image, paper quality, size, and thickness. The price drops from $58.99 to $25.99. Shipping is free for prime members, or it adds $6.