Premium Material: Crafted from durable, impact-resistant aluminum alloy, the ultraviolet flashlight is designed for longevity, with effective heat dissipation features that extend the life of the lamp beads.365NM Invisible Light: Emitting a 365nm light that is unseen by the naked eye, this flashlight is ideal for detecting fluorescent agents and security codes. Its UV black filter lens minimizes ambient light interference, delivering a purer UV light for precise results.Rechargeable Flashlight: With its built-in lithium battery lithium battery, the UV flashlight offers a long battery life of 240-360 minutes. Its USB compatibility allows for convenient charging from various devices, eliminating the need for frequent battery replacements.Compact & Portable: Measuring just 10.3*2.4cm/4.06*0.94inch, the UV flashlight is small enough to fit into a pocket, toolbox or backpack, making it easy to carry and use anytime, anywhere.Wide Application: The UV light is capable of highlighting a variety of fluorescent materials to identify cat urine, stains, or other fluids on various surfaces. It also serves as a reliable device for detecting cat ringworm and verifying the authenticity of banknotes, amber, jewelry, etc.