1. Black UV filter, filter the ambient light to make the UV more pure. 2. TYPE-C flash charging, applicable to power bank, laptop, etc. Charging is efficient and safe. 3. Power indicator function, the green light is on when the power is sufficient, and the red light is on when the power is insufficient. 4. The metal is firmly clamped and can be carried around to prevent falling. Bulb: 365nm UV LED Material: aluminum alloy Purple light power: 5W Battery: for 1x18650 battery Dimensions: 125m (length) x 25.5mm (head) x 25.5mm (tail) Weight: about 71g Packing list: 1 x 365nm UV flashlight 1 x USB charging cable 1 x 2400mAh rechargeable battery Stain & Pet Urine Detection: The Vastfire 365nm UV flashlight helps detect food stains and pet urine stains on carpets, clothes, and toilets that are invisible to the naked eye. Easily reveal pet stains in carpets without needing to clear them all; just shine the UV flashlight to make the stains visible for easy cleanup Convenient to Carry: Measuring 4.9 inches long and weighing about 90g, the Vastfire UV flashlight is portable enough to fit in your pocket, handbag, drawer, or car compartment. Ideal for outdoor activities at night or in dark conditions such as camping, hiking, night fishing, and dog walking Hard Black Filter Optical Lens: The 365nm UV flashlight utilizes a toughened black filter optical lens that efficiently removes stray light, providing a purer light color and clearer images of rocks, minerals, and harmful fluorescents compared to cheaper products Durable, HighQuality Materials: Constructed from highquality aviationgrade aluminum alloy with a strong anodized treatment, this flashlight features a reliable nonslip grip and an IPX 5 waterproof rating, making it suitable for various outdoor applications in severe weather conditions Versatile Use: The 365nm UV blacklight flashlight is practical for detecting pet urine, dry stains, bed bugs, identifying chemical spills, spotting scorpions, curing UV resin, checking counterfeit bills, IDs, hotel cards, passports, and identifying whitening agents in cosmetics