1) Zoom Use By extending and retracting the body, the zoom design lets you switch between a round floodlight for wide area lighting and a glare spotlight for long distance viewing. The field of view is adjustable and controllable for your needs. 2) Wide Applicability Illuminate hidden issues with a 365 nm UV light that reveals moss, pet urine, counterfeit currency, jade, and more. Suitable for both home and business use as a multifunctional detection solution. 3) Convenient Charging Equipped with a built-in rechargeable lithium-ion battery, it provides overcharge protection and USB charging. The unit stops charging automatically when full. 4) Robust Material Constructed from sturdy aluminum alloy for durability, delivering consistent performance over extended use. Use scenarios - Home inspection: reveal pet urine or moisture stains on carpets, floors, and upholstery that are difficult to spot with the naked eye. - Currency and material verification: check for counterfeit features and inspect jade or other materials when handling transactions or quality checks. - Maintenance and cleaning: detect moss, mold, or other contaminants in hard-to-reach areas, both indoors and outdoors. This description preserves the original functions and specifications while presenting clear, customer-focused benefits in a concise format.