Introducing the 501UV Zoom, the ultimate multi-function flashlight from UltraFire. This high-quality UV flashlight is perfect for a variety of tasks, including pet urine detection, bed mattress inspection, scorpion hunting, and ID card verification. With its compact and durable design, the 501UV is the perfect tool for all your outdoor adventures.The UltraFire 501UV features a sleek black aluminum alloy body and an optical lens for maximum durability and clarity. The convex lens and purple light provide a powerful beam that can reach distances of 100-200 meters. With a wavelength of 395nm, this flashlight is perfect for detecting invisible stains and markings.Equipped with 1 LED bead, the 501UV runs on a voltage of 3.7V-8.4V and has a waterproof rating of IPX4, making it suitable for use in all weather conditions. It can be powered by either 1 18650 battery or 2 16340 batteries (not included), giving you the flexibility to choose the best power source for your needs.Weighing only 89g and measuring 12.3 (13.5) X 2.4 X 2.8cm, the 501UV is compact and lightweight, making it easy to carry with you wherever you go. Whether you're camping, hiking, or simply need a reliable flashlight for everyday use, the UltraFire 501UV is the perfect choice. Get yours today and experience the power and versatility of the 501UV Zoom.