Flame Aroma DiffuserThe amber light creates a golden flame play with the cool mist. Using ultrasonic technology, fragrances and essential oils are optimally distributed in the room. Essential Oil Diffuser You can add 2-3 drops of essential oils (not included) into the water to make the aroma spicy and warm the room and give a romantic atmosphere. Note: Frequent (weekly) cleaning of the device to remove the minerals is imperative. (the transducer unit breaks when too many minerals accumulate).Auto Close180ML water tank that ejects up to 15-20ML per hour, which supports 10 hours of continuous use. The essential oil diffuser will turn off automatically when the water level is below the standard line, so you don't have to worry about safety issues.2 Brightness Night LightThe amber light can be dimmed or turned off entirely according to your needs. Perfomance: 4.2 watts. Please use the >2A power adapter (not included) with the included USB cable to connect to the power outlet. If this is not the case, the device may not be performing at its best - Unstable voltage, device turns off automatically/Decreased occurrence of fog.