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.