Proper size: the uv flashlight, shaping like a pen, has the length of 5.2 inches, which is portable and easily put into your packet or bag; The compact size of ultraviolet flashlight could fit your palm and is suitable for different people to operate<br>Multiple applications: the uv light flashlight are appropriate for hotel room inspections, revealing unknown human and pet fluid stains, contamination places that can't be detected by the naked eye; The blacklight flashlights can also be applied for authenticating currency, official ID cards and so on<br>Waterproof material: the uv light pen bulk are made of quality aluminium alloy with unbreakable and scratch-resistant lens, which can work reliably in rainy and snowy weather, and are able to sustain accidental fall and temporary immersion<br>Sufficient lamps: there is equipped with 6 pieces of UV black light flashlights, It is convenient to keep them in different places on hand, such as in your car or in your home; Each flashlight requires 2 AAA battery, not included<br>Easy to use and carry: it is easy to use power switch to turn on and off the mini black light flashlight, which allows for effortless one-handed operation and delivery; With removable pocket clip on the pen flashlight, it can be easily attached to your belt, bag, shirt or pants pocket