Two power supply modes: The portable atomizer can be directly plugged in with a USB device (such as a laptop, power bank, USB card, etc.) or installed with two AA batteries. Powered by two AA batteries or a USB cable to make the atomizer work. One-touch operation, just press a button and the atomizer can be up and running safely. The portable nebulizer can naturally penetrate deep into the body with your breathing, making it very efficient to use. Remember to disinfect all accessories after use to ensure they are clean. The tilted liquid cup design reduces liquid residue, allowing you to enjoy the benefits of this atomizer whether sitting or lying down. Cleaning steps: 1. Press the button on the back of the atomizer and remove the liquid cup. 2. Pour tap water into the liquid cup (do not exceed the maximum mark), reinstall and secure. 3. After starting up and removing the blockage, it can work normally.