Portable Air Humidifier with Colorful Light-The cool mist humidifiers is small and lightweight, easy to carry, ultrasonic and powered by a USB cable, which is very convenient. The package includes Humidifier in an exquisite gift box, instruction, USB cable and a replace filter. The colorful light design creates warm and relax atmosphere. It also can be used a night light. Suitable Occasion-This 300ML mini humidifier only can work with USB plug in, no battery operated. The USB is compatible with the USB port of any device or power bank to ensuring suitable for car, bedroom, office, childrens room, spa, yoga room, Plants, etc. You Can Add 1-2 Drop of Water-Soluble Essential Oils to bring a pleasant scent. 2 Mist Modes and Auto Shut-Off Function- This small air humidifier has 2 spray modes: continuous mode and intermittent mode. Fill the humidifier better with 90% water, on continuous mode it can run for 4 hours, on intermittent mode it will automatically shut-off after 6 hours. It will shut off when the water level is low. You dont have to worry about the humidifiers being damaged in the absence of water. One Button Control and Easy to Use-The mini USB air humidifiers is very easy to operate. The design is very simple, One Button controls all functions. You just need to press the power button every ONE second to control the mist. Keep pressing the power button for 3 seconds to start the night light and colorful light function. Warm Tips and No-Worry After-Sales Service-Warm Reminder: Please DONT fill the hot water and touch the top metal atomizer to influence the function. Customer Satisfaction Comes First. Any problem, please feel free to contact us. We will try our best to solve the problem.