Main material: aluminum alloy Light color: Purple 365nm Lens colour: black Short Style Product size: about 8.7*1.5cm Long Style Product size: about 12.7*1.5cm Net weight: Short Style : about 20g, Long Style : about 25g Switch: tail cover push switch (on/off) Waterproof grade: IPX4 life waterproof Power supply: 1 * AAA /2 * AAA batteries (Not included) Power: 5W Zoom mode: no, fixed focus Application areas: special lighting industry such as currency checking, illuminating traces, verifying the authenticity of amber, forensic medicine, fluorescent anti-counterfeiting bill seals, etc. 365nm: Most fluorescence is strongest at wavelengths around 360nm, and the energy produced by a flashlight like 365nm can cause a lot of unwanted interference with the visible violet light. What's more, 365nm light produces very, very little visible light that does not mask or interfere with the resulting fluorescence. Wide range of applications: suitable for all kinds of surfaces in living rooms, kitchens, bathrooms, bedrooms, garages and cars. Point out hidden nasty places around you. Just like resin curing, leak detection, commercial non-destructive testing, glassware testing, art identification, counterfeit money detection, urine stain detection. Durable Weatherproof Aluminum Alloy Body: This UV flashlight is made of durable aluminum alloy that can withstand accidental drops, temporary immersion in water, and operate reliably in any conditions. Out of the box: All you need to do is put the device in, press the tail button and focus on the object you want to detect. It's small and lightweight, so it's perfect for handheld and easy to use. Wide range of light: Our users need stronger 365nm UV rays and a greater range for better results. Our new design is designed to fill these gaps. (1) The popular and in-demand V3 format now emits higher quality UV light at 365nm. (2) It is more cost-effective to use filtered ultraviolet light. It is not cheaper unfiltered UV rays. (3) Unmatched long range (60ft+) and high intensity 365nm beam.