Fashionable design: This small humidifier size: 3.9*3.9*5.5in mini body colorful LED colors and hollowed out patterns coupled with a unique robot appearance creates a simple sense of technology.Powered by Micro USB 5V=1A compatible with any device with USB port (laptop desktop power bank socket power outlet^ Ultrasonic technology: in a dry environment to prevent dry and cracked skin help you breathe smoothly low noise provide a quiet office sleep environment. Very suitable for travel bedroom office desktop humidifier.^ Multi-function and security chip: It has a USB output interface which can meet the needs of small fans and night lights. The multi-function is integrated.The smart security chip automatically cuts off the power when there is no water to prevent the humidifier from drying out .Powered by Micro USB 5V=1A compatible with any device with USB port (laptop desktop power bank socket power outlet).^ Instructions for use：This mini humidifier has two modes. When you press the button first time it will continuously spray for 6 hours. When you press again and it will intermittently spray (stop 2 seconds) for 12 hours. 350ml large capacity produces longer mist.Sealed water tank design will not leak water casually.^ As an honest seller we can t guarantee that all the machines are 100% perfect but we can guarantee 100% service. If you encounter any quality problems please contact us I believe we will give you a satisfactory reply.