HATISS Anti Blue Light Glasses Test Pen Teaching Flashlight Cat Catch the Beam Light

Feature:1. You can play it with your cat which can help you and your cat to exercise.2. You can use it as Teaching Flashlight which has 532nm blue light.3. You can use it as Euro Pen Money Tester which Works on most international paper currency.How to use as Money Tester :1) Mark the note,for example,with a cross,in an area which is lightly-coloured and not printed on.2) If the marking shows up as bright yellow, your bank note is genuine and therefore valid!3) If the marking goes dark and stays dark, your bank note is forged!4) The marking disppears again after a few hoursSpecification:Size: approx. 150 mm X 14 mm/5.99" X 0.55"Quantity: 1PcColor: Blue LightNote: Please allow 1-3mm differs due to manual measurement.Due to the different display and different light, the picture may not reflect the actual color of the item. Thanks for your understanding.Package includes:1pc Blue Light Test Pen (no Retail Package)Without battery included ( need 2pcs AAA+ Battery)