describe: 400ml large capacity and large fog output: long working time (6-14 hours), good fog volume (30-80ml/h). When you add essential oils to it, it is a humidifier or diffuser. Ultra-quiet and automatic shut-off: Using ultrasonic technology, this diffuser is very quiet when working. When the water is used up, it will automatically shut down to ensure safety. 4 Timer setting and fog control: 1h/ 3h/ 6h/ continuous mode. Long press the fog button for 3 seconds, the thick fog beep and the fog weak beeps twice. 7 Soothing LED light: The soft light creates a calm and romantic atmosphere. The color can be cycled or set to a fixed color. There are two lighting options for each color: dim and bright. Press the light button for 3 seconds to turn off the light. Classic wood grain finish: natural wood grain appearance and unique vase shape design. The Zen-style appearance makes you feel relaxed. Decorate your room well.