The INOVA Ultraviolet Microlight is an ingenious, precision engineered micro UV flashlight. It's great for detecting counterfeit bills/IDs, spotting fluorescent dyes or leaks during auto or HVAC repairs, and during hunting or crime scene investigation. If you need UV light for your hobby or profession then you know that it has a multitude of additional uses. From its tough polycarbonate construction to its multi-function switch mechanism and powerful UV LED Lamp, the Microlight UV offers advanced design and engineering in a micro size UV flashlight. The Microlight UV also features four lighting functions, a water and crush resistant body, plus a stainless steel universal clip that easily attaches to key, zippers, backpacks and any number of convenient locations. Product Details: High-Powered UV LED bulb - 1,000 hour life, 365-400 nanometer wavelength Four Functions: High power, Low power, Strobe, Signal mode Stainless Steel Clip for secure attachment Impact and water resistant body Temperature Operation Range from -4°F to +104°F (-20°C; to +40°C) Run time: Up to 10 Hours Effective range: Up to 50' Signal visibility: Up to 1 Mile Battery Type: 2 x 2016 Lithium Batteries (Included) Dimensions (Height x Length x Diameter): 1.85" (4.7cm) H x 1" (2.5cm) W x .325" (0.8cm) D Weight: 0.36 oz (10g) Easy-Open/Snap-Shut Construction for effortless battery replacement Durable Stainless-Steel Universal Clip attaches securely and releases quickly Limited lifetime warranty Made in the USA