Feature:1. MULTIPLE USAGES: This UV flashlight has a wavelength of 300395nm, suitable for detecting fluorescent agents, anti counterfeiting codes, and curing UV glue.2. POWER SUPPLY: Powered by a 18650 lithium battery (not included), with low power consumption, no need to replace battery frequently, more energy saving.3. ZOOMABLE DESIGN: Extend the head of the flashlight to achieve zoom, the light will automatically focus when extended, and the light will spread when retracted.4. FOR OUTDOOR USE: Using aluminum alloy shell, resistant to falling and impact, with waterproof rear rubber ring and switch button, the flashlight can be used outdoors.5. COMPACT SIZE: This handheld flashlight has a compact size that can easily fit in a backpack or pocket, takes up little space, which is convenient and practical.Specification:Item Type: UV FlashlightUnshrunk Size: Head Diameter: Approx. 25mm / 1inLength: Approx. 123mm / 4.8inTail Diameter: Approx. 23mm / 0.9inExpansion Size: Head Diameter: Approx. 25mm / 1inLength: Approx. 130mm / 5.1inTail Diameter: Approx. 23mm / 0.9inPower Supply Battery: A 18650 lithium battery (not included)Light Source: UV VioletWavelength: 300-395nmFunction: ZoomableControl: ButtonMaterial: Aluminum AlloyWeight: Approx. 83g / 2.9oz.Package List:1 x UV Flashlight1 x USB Cable