This is Pocket Purifier, a portable device that uses UV light to kill germs. The Pocket Purifier has a built-in UV-C bulb that can kill germs and bacteria. It can eliminates 99.99% of E-coli, staphylococcus, salmonella, and germs that cause the flu and the common cold. Features & Benefits Built in 4 watt germicidal ultraviolet light, deactivates the DNA of bacteria, viruses and other pathogens destroying their ability to multiply. The specially designed UV-Lid? helps avoid any harm of ultraviolet light to eyes and skin and also enhances the germ-killing function. Suitable for purifying masks, kitchen utensils, telephone sets, nail clippers, scissors, baby toys, pacifiers, cribs, strollers and most everyday items. Powered by 4 (AA) batteries for easy carrying and safe usage