UV Portable Sterilizer Disinfection Box for Masks & Mobile Phones. You can use it for makeup brush manicure mask ultraviolet cleaning germicidal sterilization case. Super Fast Sanitation - 3 minutes: It only takes 3 minutes to protect yourself and your surroundings stay clean. Press the coating button, the device will tell you that the disinfectant is starting to work. When the LED indicators reach 100%, the device stops automatically.