How To Use The Aerobe Portable Humidifier? Four easy steps to the refreshed environment Step 1: Rotate the cover counterclockwise to remove it from the humidifier. Step 2: Pour water into the water tank until it reaches the desired level. Step 3: Tighten the cover by rotating it clockwise. Connect the humidifier to a USB power source. Step 4: Press the button once to activate the Continuous mist mode & twice to activate the intermittent mist mode. The third Press will turn off the humidifier. Note:When using it for the first time, take out the two tampons from the humidifier, soak them in water, and then put them back into the humidifier for use Enjoy the improved humidity in your space! Remember to clean and maintain the humidifier regularly for optimal performance.[Easy to Operate] The cool mist humidifier only has one operating knob.You can switch on/off or adjust the mist output simply with a mechanical knob.And with large opening top-fill design, you can refill or clean the water tank easily. Simply remove the upper lid and pour water from the top. [Moisturize your skin] Moisturize your living space, humidifiers for home,air humidifier for bedroom,humidifier for baby, to prevent dry,sultry air and flu/cold bacteria from infecting your loved ones. [USB Powered & Large Capacity] The tank capacity is 2L for the diffuser of the air humidifier, and the longest working time is10-20 hours.The air humidifier can be powered by a USB cable. There is no AC adapter in the box.Comes with USB cable, computer, laptop, mobile power interface. [Mute-automatic shutdown without water]-The quiet atmosphere of the mist humidifier lower than 30 dB can create a quieter sleeping environment.When the water level in the water tank is lower than the water level probe in the water tank, all spray modes will be automatically closed. Prevent dry burning to ensure safe use for you. [Efficient Humidifying] With the design of 360 Rotatable dual-spray nozzle and advanced humidification systems,quickly increase air humidity. And the humidifier has 3 levels adjustable mist volume to suit your needs.