【Product Features】 ・High-output 5W 365nm light provides long-lasting and stable light. ・Compact design makes it easy to carry and use in various situations. Diameter 2.2cm x Total Length 9cm ・Convenient USB charging ・Comes with a carrying strap and charging cable This black light has a wavelength of 365nm and belongs to ultraviolet A (UVA). It emits light invisible to the naked eye and reacts with certain substances to fluoresce. 【Uses】 ● Food Safety Inspection When serving dishes using raw fish (sashimi, sushi, etc.), you can use a black light to check the inside and surface of the fish to detect the presence of Anisakis. ● Counterfeit Money and Passport Detection 365nm black lights are used to check the fluorescent ink embedded in banknotes and passports. This is useful as a security measure to prevent counterfeiting. ● Mineral Fluorescence Observation Some minerals fluoresce uniquely when exposed to ultraviolet light, making this a valuable tool for mineral collectors and geologists. ● Cleaning Condition Verification Hotels and hospitals use black lights to detect invisible dirt and stains, improving the quality of cleaning. ● Night Fishing and Camping Insects and certain organisms react to ultraviolet light, which can be used for observation and trapping during night fishing and camping. ● Fluorescent Art and Entertainment Combined with fluorescent paints and inks, it is also ideal for decorations at parties and events, and for producing art works. 【Precautions】 It is recommended to wear UV protection glasses when using. Prolonged direct exposure can damage the skin and eyes. Keep out of reach of small children. Please use this black light for a variety of purposes!