- Versatile and powerful: This double-headed 4LED flashlight features four light sources (white light, light yellow, 365nm purple light, and 395nm purple light) with six adjustable brightness levels, tailored for various jewelry identification needs. - Convenient USB charging: Compatible with power banks, laptops, and charging adapters, this flashlight is equipped with a large-capacity built-in battery, ensuring long-lasting use. The power protection system safeguards against overload and over-discharge. - Durable LED technology: High-quality LED light beads provide high power and longevity, offering up to 100,000 hours of reliable performance, making this flashlight a dependable tool for regular use. - Premium construction: Made from high-quality stainless steel and aluminum alloy, the flashlight features a smooth surface that is both aesthetically pleasing and robust. It is designed to be heat-resistant, pressure-resistant, and capable of withstanding drops and impacts. - Wide-ranging applications: This flashlight is ideal for jewelry and jade identification, currency verification, outdoor lighting, and camping. Its versatile functionality makes it an essential tool for both professionals and everyday users. - Compact and user-friendly: The lightweight design ensures easy portability, allowing you to carry it wherever you go, making it the perfect companion for your outdoor adventures or professional needs.