For dry stains, the black light ultraviolet flashlight is very suitable for removing food and pet urine stains on carpets, rugs and other unfavorable places invisible to theeye. The widely used ultraviolet flashlight is a perfect tool for evaluating the authenticity of coins, official documents and some important documents (such as driver's license and ID card). The UV detector can also be used to distinguish whether these cosmetics contain fluorescent brighteners. Waterproof material, IPX4 uses black light. It is a waterproof material tt can prevent the flashlight from getting wet. The service life of 12 durable 395nm ultraviolet black LEDs is more tn 15,000 hours. This black light flashlight uses high-quality durable LED. The small portable ultraviolet black light is 3.86 inches high and 1.06 inches in diameter. They are easy to carry or put in your pocket. It is very compact. UV Urine and Stain Detector The ultraviolet flashlight emits a wavelength of 395 nanometers, which helps us discover the secrets of cos in life and reveal false objects invisible to theeye. How to use it? Turn off all natural light, turn on the UV lamp and shine it. There may be stains invisible to theeye, such as pet urine and food stains.