Size: 3.0 cm * 3.0 cm * 11.5 cm Color: black Material: aluminum alloy Package content: 1 * flashlight 1. Stain detection: UV flashlight can be used to display pet urine in carpets and furniture. You don't need to clean all the rooms. As long as you use an ultraviolet flashlight to shine, the stains will show up and be easy to clean. 2. Ensure safety: you can find the fluorescent whitening agent contained in baby clothes or cosmetics to ensure that it is not affected by the fluorescent whitening agent. For articles without fluorescent whitening agent, black light will display purple light, and for articles containing fluorescent whitening agent, it will display blue light 3. More features: The ultraviolet flashlight can also identify counterfeit money and display hidden ink on passports, banknotes or other important documents. It is also an important tool for law enforcement, postal inspection, customs, medical evidence collection and scorpion hunting. Required battery type: 3 AAA batteries (including batteries). If you do not use them for a long time, in order to maintain the life of the flashlight, please put down the battery free product 5. Durable and super bright ultraviolet flashlight is of high-quality aluminum structure, with wear-resistant surface treatment, heat dissipation and anti-skid texture.