Note: Pls add tap water or mineral water. If you add purified water, the humidifier will not work properly. Package Included: Package Including: Diffuser *1 USB Charging Cable* 1 Product Manual *1 How humidifier atomization works Humidifier atomization principle: the principle of humidifier spray is through ceramic ultrasonic vibration, the water is squeezed out of the micropores, the atomization sheet drives the circuit board to the atomization sheet one by one vibration frequency, the atomization sheet can vibrate, the liquid will shake out from the micropores into fog. The difference between pure water and mineral water Pure water's water molecules do not contain any minerals and impurities. Mineral water is water molecules that contain many minerals. Therefore, the water quality of water without any minerals is much lighter than the weight of mineral water. When the humidifier is loaded with pure water spray, the fog quality of the spray does not contain any minerals, resulting in the spray fog is relatively light, not high (like throwing a piece of paper in the air and throwing not far). the sprayed fog is not as high as the spray. the water will fall on the humidifier plastic shell, and then the entire humidifier head. It's all water droplets. Anyway, if you have any problem, pls contact me!