Ultrasonic Technology The atomizer USES super frequency electronic oscillations. The frequency of concussions is 1.7 MHz, which exceeds the range of human hearing. It does no harm to human body and animals, and it is safer. Dream Colorful LightsWith 12 high quality bright LED lamp beads, emitting fantastic colorful lights, the lights colored will automatically change color, bringing unique attraction and decoration to your yard, creating a beautiful and romantic atmosphere. Purify Fresh AirMini Mist Maker will release a large number of negative ions in the process ultrasonic atomization, combined with airborne flotation of smoke, dust, electrostatic treatment to filter precipitation, can effectively remove second-hand smoke, formaldehyde, carbon monoxide, bacteria and other harmful materials and peculiar smell.< /p> Cooling and Atomization Ultrasonic generated mist water, delicate and cold. It has the effect of cooling and humidifying the air. Installing the atomizer in the potted landscape may produce mist and humid air, making the landscape more beautiful. Auto Shut Off When Water Shortage built-in automatic shut-off protection against lack of water. The diffuser will automatically shut off when the water runs out or is scarce, and it will protect your safety.