Allows the flexibility of charging on-the-go using the included USB cord. The Streamlight 66149 Stylus Pro USB UV is a sleek compact pen sized, USB rechargeable, lithium-ion battery powered flashlight designed for use in all markets. The UV LED provides ultraviolet light for detection of fraudulent documents, forensic investigations, or detecting engine or HVAC leaks. The light features a tail cap switch for momentary or constant on operation and a pocket clip for convenience. The aluminum housing with Type II Military Spec anodizing helps make the light extremely durable and abrasion resistant. Packaged with a removable pocket clip and holster. Limited lifetime warranty.