Waterless auto-off: When the water is exhausted, the aroma diffuser is switched off automatically. You don't have to worry about damaging the device yourself or posing a danger to the user. Very quiet with ultrasonic technology: Equipped with the unique sound-absorbing cover, the noise can be controlled below 20 dB to create a quieter sleeping environment. This room diffuser runs so quietly that you hardly notice it. 3 in 1 functions: aroma diffuser, humidifier, night light. This is an essential oil diffuser, but you can also use it as a humidifier, please note that it is suitable for environments up to 20. If the environment is bigger, the humidification effect will be worse. 7 Adjustable Led Light with Two Modes: You can choose 7 colors between two modes: stable / change color. Each color can be set between light and dimming. The soft light creates a romantic atmosphere that will help you escape the hustle and bustle of modern life. Timer & Fog: 10 Second / 2 Hours / 4 Hours / Continuous Use. Strong and weak fog adapt for different occasions and preferences. Product descriptions Size: 500 ml This humidifier is easy to use and no complicated handling is required. Below you could find step-by-step instructions: 1. Place this item on a horizontal position. 2. Lift the diffuser cap and fill the tank with purified water. 3. Connect the humidifier to the power supply and press the MIST button to select your desired operating mode. 4.You can press the LIGHT button to change the color of the LED. 5. When the water is used up, the device can be switched off automatically. Specification: Input voltage: AC 100-240V 50 / 60HZ Nominal voltage: DC 24V 500mA Power consumption: 12W Water tank capacity: 500ml Size: 133mm * 133mm * 100mm Ultrasonic frequency: 2.4 MHz Noise level: less than 35dB Running time: 10 hours. When the time has elapsed or the device is empty, it is automatically switched off. LED light: 7 soft lighting colors to choose from Applicable area: 20sqm Scope of delivery: 1 x Aroma Diffuser 1 x power plug 1 x user manual