Adela Personal Desktop Humidifier, Whisper-quiet Humidifier for Work Office, USB Charge with Mood Lamp(Black) Air Humidifier Suit for almost all the bottleneck (bottleneck Diameter about 3cm).SO EASY TO USE! Just put 1 bottle of water on the base, touch the on switch. And enjoy the relaxing, soothing cool, easy to clean and it even has an auto shut off safety function. ONE BUTTON CONTROL: Press only, get the moist air. Popular work status light: Distinguish the working status at any time. Air Humidifier Auto shut off when the water runs low. Noiseless Operation - The super quiet, you won't even know it's on. Ultrasonic Cool Mist -Air Humidifier Ultrasonic mist creation to release an exquisite fragrance into the atmosphere WHY NOT GET 2 FOR HOME AND OFFICE? Not allowed plug in electrical devices at work? No problem! Air Humidifier convenient to carry simply use the USB port on your computer.