The LEAGY flashlight is made of 9 led with less power which is portable to carry in hand or bags.The strong Aluminum alloy body makes this product durable and long lasting.The UV flashlight can be used to reveal pet urine in carpets and furniture.You needn't to clear all house,just shine the UV flashlight and the stains will come out,makes it easy to clean up.The UV flashlights can also identify counterfeit money and reveal the hidden ink on passport,money or other important documents.It is also an essential tool for law enforcement,postal inspections,customs,medical forensics,scorpions huntings.Direct exposure to uv flashlight are harmful on the eyes.UV lights are radiation,a lower frequency wavelength than X-rays.So don't directly to naked eyes.The lights are powered by 3AAA battery (no included).