Function: 1. Function: Black light, also known as UV flashlight or black light flashlight, simply shines ultraviolet light on an area or object to show fluorescence. Because many items fluoresce, black light is used in many different industries. 2. High efficiency: the wavelength of this black light is 365nm, the UV power is 1300MW, the power consumption is 20W, with UV filter and black lens, the irradiation effect is stronger, making the color of the fluorescent agent more distinct. 3. USB charging and power supply: With the Type-C charging port, you can charge the battery cycle directly. Our flashlight is powered by one 26550 lithium battery. 4. Widely used: suitable for a variety of scenarios: such as document verification, jewelry appraisal, pet urine and stain detection, counterfeit money identification and verification, hotel room inspection, antique porcelain inspection, automotive and industrial fluid leak detection, UV curing, luminous glass uranium, etc. 5. Durable and Durable: Made of aluminum alloy, our black light has a hard and wear-resistant casing that is not easy to damage. The metal housing fits well in the hand. Specification: Item Type: Black Light Flashlight Material: aluminum alloy Weight: approx. 185g/6.53oz Size: Lamp head diameter: 44mm/1.73in Lamp Length: 153mm/6.02in Lamp Tail Diameter: 32mm/1.26in Light source: UV violet light Power: 20W Charging input port: type C (with cable) Wavelength: 365nm Control: key switch Gear mode: on and off How to use: Insert the battery and press the switch to light up. Package List: 1 x Black Light Flashlight 1 x USB Cable