Product Highlights? ?RGB colorful flame light? This flame humidifier has a unique 7 color changing night light, which can adjust the color of the flame, create a romantic and pleasant atmosphere, achieve the effect of relaxation, and is suitable for sleep. Parameter Power supply: plug in the USB cable (please use 5V2A adapter for power supply) Water tank capacity: 180ml Atomization amount: 15-20ml/h Use time: 9-12 hours Products include 1. Diffuser*1 2. Instructions for Use*1 3. USB line*1 4. Essential Oil (20ml, optional). If you need the essential oil, please choose the SKU with essential oil. Use caution 1. This is a diffuser, no need for any cotton swabs, then you can add non-corrosive essential oils to diffuse the aroma. 2. Please make sure to use a 5V2A adapter for power supply, otherwise the circuit may be damaged. 3. Please make sure that the water level is below the MAX line, please do not let the water enter the ventilation duct, otherwise it may damage the circuit.