ALONEFIRE black light cat urine blacklight ultraviolet flashlight 395 nm UV 12 led lamp portable blacklight 3 AAA battery with free keychain light for Home Sports Outdoors Hunting Camping Hiking Pet The flashlight is very easy to use,just push the button on the top of the ultraviolet flashlight the ingenious handy,lightweight and convenient,so it doesn't take up much space to store and it's portable. This black light has a diamond patterned no slip grip,so it is Skid proof.rubber gasket is on the battery cap and made of Aluminum Alloy (other than the lens and bulb sections),so it is durable. This uv light is water resistant due to the O rings at all screw connection,There are raised arrows on the battery holder to indicate the correct insertion direction with 3 x AAA batteries (not included). Blacklight flashlight emits 395 nanometer wavelength light,the protective lens cover to protect the bulbs seems well made and the aluminum extends past the position of the lens cover. This uv flashlight works best in the dark and save time hunting down the exact spot of hidden pet urine stains,also use for scorpion hunting.