Cool Mist & Pleasant Aromatherapy: Applied ultrasonic technology ionizes essential oils into ultra-fine mist to humidify and refresh the air - perfect for relieving stress and calming the mind, helping you fall asleep and humidifying the air, significantly alleviating insomnia. BPA-Free & Water-Free Auto Shut-Off: This essential oil diffuser is made of BPA-free materials, making it 100% non-toxic and safe for babies and children during use. The humidifier automatically shuts off when the water runs out, increasing safety and energy efficiency. 7 Color Changing: You will find the changing effect of the night light relaxing, gentle, and colorful. You can definitely switch between colors, lock it to a fixed color, or turn it off completely. Romantic and relaxing color for bedroom, study, office, living room, bathroom, children's room, etc. It can also be used as a night light, so children are not afraid of sleeping in the dark. It is an ideal humidifier for children. 4 Timer Settings and