CAUTION. UV radiation is emitted from this product. Exposure may cause eye and/or skin irritation. Use appropriate eye protection. ATTENTION. Possibility of hazardous optical radiation emitted from this product. Never look directly into the light beam. Risk of eye damage. UV light is suitable for inspecting banknotes, cracked glass and detecting insects, mold, water, etc. 9 UV LEDs anodized aluminum housing impact resistant wrist strap Product dimensions: cylinder length 87mm, head diameter 26mm, tail diameter 26mm; Color: Black Light source: 9 UV violet wavelengths: 365-400NM Power supply: Using 3 AAA batteries for lighting time: 6-8 hours (sold without batteries) Working voltage: 4.5V Switching method: Rear button switch Product model: D9C-6UV material: Aluminum surface treatment: Oxidation Application fields: 1) Medical devices 2) Disinfection and sterilization 3) Ink solidification 4) Detection of metal cracks and cracks 5) Photocatalyst light source 6) Cash verification and counting equipment 7) Anti counterfeiting industry 8) Medical measurement and biostatistical safety testing 9) Hydraulic leak detection. 10) Shoot amber, capture scorpions, and check tickets. 11) Nail enhancement and so on. package1pc flashlight.