Two spray modes: one-button switch, continuous spray/intermittent spray. Continuous spray for 4 hours, intermittent spray for 8 hours. Two spray levels alternate according to your preference. When the water in the humidifier runs out, it will automatically shut off to prevent dry burning. Use it more safely. Easy to use: The mini diffuser is powered by USB. After turning the lid, you can pour water in and add a few drops of your favorite essential oil. Emitting a pleasant smell can lower the mood and reduce the stress of the working day. Color LED: The personal humidifier has a color LED mode, which can be used as a small night light to create a romantic atmosphere at night. Silent humidification: Whether you are in the car, office or bedroom, it is quiet, interference-free, almost noiseless and will not disturb sleep. Humidification at any time: This mini humidifier is very suitable for use at home, living room, office or travel. Just plug the cable into the USB port of the car