COSOOS UV Black Light Flashlights, 4 Pack 395nm Mini Pen Lights with Clip, Waterproof Ultraviolet Flashlights for AC Leak, Pet Urine, Scorpion, Hotel Inspection, Dry Stain and Bed Bug Detection

395M BLACKLIGHT395nm wavelength can help to detect what naked eye can not see, like dog and other pet urine/stains, driver license, official identification cards, passports, customs or authenticate currency.
EASY TO USENo need any complicate operation, simply press the button to turn on/off the flashlight, great for both indoor and outdoor use. Powered by 2*AAA batteries (Not Included).
Note: The correct installation method of the battery is "+" into the flashlight, "-" facing the tail cover.
LIGHTWEIGHT & METAL CLIPMeasure in 5.5 * 1.1 * 0.8 inch, weight only 1.1 oz/pcs, is extremely lightweight for daily use. With the removeable metal clips, this LED pen light can be easily attached to your belt, pocket, bag or hat, take it anywhere you go. Free your hands when doing works or repairing.
RELIABLE & WATERPROOFMade of high quality alloy material, strong and sturdy, IPX4 waterproof level resistant from splashing water. Suitable for use in rain, snow, or emergency situations. but please do not immerse this urine detector into water.
QUALITY GUARANTEEYou will get 4*blacklight penlights, each flashlight powered by 2*AAA batteries (Not Included), Military grade aluminum material, and the portable design make our black light perfect gift choice for family, friends and pet-lovers. 90-Day Money Back Guarantee.