Super-Quiet Ultrasonic Humidifier: adopting ultrasonic technology, the diffuser produces almost no noise (<35dB), won't disturb you when working, learning and sleeping. Waterless Auto-Off: The humidifier 300ml water tank capacity can last for 8 hours work, the diffuser will automatically shut off when the water runs out,so it will help you sleep or go out without any worries. 7 Color LED Light:Aromatherapy Diffuser with changing 7 Color LED lightyou can choose Enjoy alternating colors or a single color to suit your mood .Enjoy yourselves while you study,work & relax. Portable & USB Powered: The humidifier is lightweight and portable, powered by USB Cable, ideal for home,office, bedroom, car, travel, etc. Suprising Gift:This mini portable cute humidifier is the best gift for baby,kids ,girls,women,friends and the one your loved. Instruction for use 1.If need to add essential oils into it,do not take high concentrations of essential oils, add 1 to 2 drops of diluted essential oils in water to extend product life . 2.Be sure to clean it after use,if don't wash after use, the oils will plug the swab,and may not be available next time,then you can clean up the humidifier and change a swab. Before connecting a power source, please add tap water into the tank, and soak the swab fully. Features: Professional cool mist humidifier, decent water tank (300ml), consistent mist (35ml/h), quiet working noise (<35dB) and long working time (8 Hours). Lovely Animal design, plus the 7 colors LED light, makes a great decoration to your home, office and car. Automatic Power-off Protection, will never have to guess when the reservoir needs water and extended service life. Powered by Micro-USB Cable ,it can be powered by any device with USB port (laptop, desktop, power bank, socket, power outlet),and this provides more flexibility to users. Usage of the Humidifier: 1.Press the button 1st time to turn on the continuous mist. 2.Press the button 2nd time to turn on the intermittent mist. 3.Press the button 3rd time to turn off the spray. 4.Press the button 3 seconds to turn on the light. 5.Press the button 3 seconds again to turn off the light. Specification: 1.Size:4.1" x 3.8" x 4.8" 2.Weight: 0.34lb 3.Material: ABS & PP