Product Description PORTABLE ULTRASONIC NEBULIZER What is a nebulizer? Nebulizer (atomizer) is a device that is intended to spray liquid medication in aerosol form into the air that a patient will breathe. Why buy a nebulizer? We are often affected by diseases such as colds and flu, and occasionally have a dry itchy and sore throat. Some people may be suffering from upper and lower respiratory diseases for a long time. Nebulizer is a good axiliary device to relief and treat those deseases. Why choose us? We use advanced ultrasonic tech make our nebulizer to provide micron-sized particles which can be absorbed by the human body. Package Included 1 X Nebulizer 2 X Adult Mask 1 X Child Mask 1 X Mouthpiece 1 X USB Cable 1 X User Manual Read more Two Modes of Power Supply It can be powered by 2 X AA batteries. It can be powered by a USB cable, and the USB cable can be connected to attaching plug or power bank. Please be careful not to use the USB cable when the batteries are installed. Updated Version Compared with the previous generation, the size of the machine is reduced by 20%, but the efficiency of the machine is increased by 10%, so that the machine can provide more stable and continuous mist. Very Easy to Cean Up 1. Remove the liquid cup, and then install and fasten it again. Press and hold the "heart" button at the back to pull out the liquid cup. 2. Fill the liquid cup with tap water (do not exceed the maximum scale) 3. Start the machine to clean up the blockage. After that, it can work normally. Portable & Rechargeable Meas: 2x1.8x4.5inch, real pock size, build in rechargeable battery and one key operated, good for use outside your home