①. Product Description: Aroma Essential Oil Diffuser with LED, 300 ml. ②. Water Capacity: 300ml Before turning on, make sure there is enough water in the tank, this product cannot be turned on if there is no water ③. The spray part cannot be put into water or washed under the tap, wipe with a damp cloth or wet sponge ④. Do not exceed the water line, it should not exceed the water line, whether there is enough water in the water tank ⑤. Refreshes the skin and can be used as a skin care product to keep the skin healthy and moist ⑥. Choose the light you like to make the room romantic and happy, and smell nice. ⑦. Aroma diffusers are a device that continuously emits a pleasant scent in the form of cold steam. It has a tank that you fill with water and the oils of your choice. Then ultrasonic waves disperse the water and oil into the room with a wide dispersion range. Therefore, depending on the size of the device, it can be ideal for larger rooms. This device can also be used as a humidifier. ⑧. The operating time of this type of aroma diffuser depends on their size - smaller devices will operate for a shorter time, while larger ones will operate for a longer time. In addition, many of them have timers that allow you to adjust the length of their operation: one, two, four and eight hours. Others have the option of operating continuously, which is ideal if you want a fragrant room humidification all night long while you sleep. ⑨. If you are worried that it will operate even when there is no water or oil in the diffuser tank, do not worry. These devices usually have an automatic shut-off when the tank is empty.