How to use:1. , open the lid of the humidifier, add water, take out a cotton swab and soak it in water until it is sufficiently moist before installing it back into the humidifier for use; The soaking time for cotton swabs is about 3 minutes. 2. Close the humidifier cover, connect the USB power supply, the switch, and the humidifier starts work. Double-mouth :The Double Humidifier releases super-large nano-fine mist every hour, quickly increases indoor humidity, doubles moisture, and effectively relieves the discomfort caused by dryness. Whether it is a dry winter or an air-conditioned room, it can quickly restore air humidity. Warm night light function: Digital Display Humidifier equipped with an intuitive temperature display screen, which monitors and displays the ambient humidity in real time, built-in warm night light mode can provide you with soft lighting at night, making you more comfortable when sleeping. Quiet operation: Double Humidifier is very quiet when running, it not affect rest and work, and the essential oil tray allows you to add spices or essential oils according to your personal preference to add fragrance to the air. Best Present:Digital Display Humidifier is beauty and practicality , the best present for family and friends, such as Valentine's Day present, birthday present, Halloween present, Christmas present, etc. Water-shortage Power-off Protection: Yes Installation: Tabletop / Portable Type: Cool-Mist Impeller Humidifier Noise: Less than 36db Humidification Method: Mist Discharge Power:5w Voltage: 5 V Color: White Material: ABS+PC+PP Package Contents: 1 x humidifier Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.