Features. Rapid identification. Large-area black UV filter, filtering the ambient light to make the UV purer, making the identification and detection clear at a glance. Indicator lights. The red indicator light is always on when the battery is low, the blue light is always on when the battery is full, the red breathing light is on when charging, the status is clear to know. Built-in battery. With built-in 18650 lithium battery, plus Type-C USB charging design, which supports 5V1A output, making this flashlight can be used as an emergency power supply. High-quality material. Made of high-quality space aluminum alloy material, the flashlight is sturdy, wear-resistant, fall-resistant and corrosion-resistant. Wide applicability. Suitable for the appreciation and anti-counterfeiting of banknotes, passports, collectibles, amber beeswax, antiques, etc., crop fungi identification, and fluorescent detection of pet bacteria. Specifications. Material: Aluminum alloy. Item Color: Black. Model: 1365. Light Source: 365 UV LED. Wavelength: 360-365nm. Switch: Push switch. Battery: 1*18650 battery (included). Charging Method: Type-C USB charging (supports output 5V1A). Gear Position: 1 gear. Zoom Method: Fixed focus. Waterproof Rating: IPX4. Indicator Light: Always-on red light (low battery); always-on blue light (full battery); breathing red light (charging). Light Range: 50m/1965inch/164ft. Size: 16.5*4.7*3.5cm/6.48*1.85*1.38inch (L*W*H). Weight: 280g/9.88oz. Rapid identification: Large-area black UV filter, filtering the ambient light to make the UV purer, making the identification and detection clear at a glance. Built-in battery: With built-in 18650 lithium battery, plus Type-C USB charging design, which supports 5V1A output, making this flashlight can be used as an emergency power supply. High-quality material: Made of high-quality space aluminum alloy material, the flashlight is sturdy, wear-resistant, fall-resistant and corrosion-resistant. Wide applicability: Suitable for the appreciation and anti-counterfeiting of banknotes, passports, collectibles, amber beeswax, antiques, etc., crop fungi identification, and fluorescent detection of pet bacteria. Indicator lights: The red indicator light is always on when the battery is low, the blue light is always on when the battery is full, the red breathing light is on when charging, the status is clear to know.