1.One Button ControlPortable USB small humidifier is easy to operate,One button control of all functions.You just need to press the power button every 1 second to control the mist.Press and hold the power button for 3 seconds to turn on the colorful atmosphere light.(Warm tip: Soak the cotton swab in water for 3-5 minutes for the first use, and then put it in the catheter) 2.Double Nozzle Double MoisturizingThe small humidifier has dual nozzles , 2 spray modes , and has a dual humidification effect than the traditional single nozzle humidifier . Single spray mode can last up to 7 hours ; The dual spray pattern lasts up to 4 hours . Built-in water level sensor , When the water level is below the set minimum , it will automatically turn off the power . And strong sealing , no longer afraid of accidental dumping of liquid leakage . 3.Silent Ultrasonic HumidifierThe small humidifier produces a near-silent frequency of 25dB (quieter than a library ) , create a quiet environment , Bringing you a good night's sleep and a distraction-free work environment . 7-color soft night lights , create a sweet and romantic sleep atmosphere , improve sleep quality 4.Spray switching modeShort press the power button to turn on the spray switching mode, at this time it is the dual spray mode (white indicator light is on ). Short press again to switch to single spray mode. The single spray method can be divided into left fog and right fog. 300ml water tank capacity can produce longer mist. The detachable water tank is convenient for you to add water for cleaning