Rechargeable: L13UV black light can be recharged with the included USB charging cable, no extra batteries needed. After fully recharged, it will last about 2.5 to 3 hours on High, last about 7 to 8 hours on Low. Also we provide a battery rack which can support 3 pcs AAA batteries.Find Invisible Stains: This blacklight flashlight emits 390 to 395 nanometer wavelength, which can help detect food stains and pet urine stains on rugs, carpets, and clothes that are otherwise invisible to the naked Eye.Versatile Use: The black light flashlight is also great for authenticate currency and official documents like drivers licenses or identify unwanted whitening agent in cosmetics, and outside use such as finding scorpions and minerals.Premium Quality: This UV flashlight is made of aircraft grade aluminium alloy housing with hard anodizing, featured with waterproof and impact resistance, built to last long. And the 12 UV light LEDs have a lifespan of 100000 hours.Warranty and Service: 100%
