【Colorful Night Light Mode】7 multi-color LEDs with two brightness settings are built into the device to create cool and relaxing moods in your room. You can choose between two modes: fixed color (color remains the same throughout use) or automatic change mode (colors vary throughout use). 【 One-Button Control】Portable USB humidifier is very easy to operate. One button controls all functions, you just need to press the power button every 1 second to control the fog. Keep pressing the power button for 3 seconds to activate the nightlight and colored light function. 【Quiet Operation】 Thanks to its ultrasonic technology, the humidification is done discreetly (30dB) in a fine and cold mist . You can leave it on when you sleep or work and you hardly feel it. 【Safety with Auto Shut-off】The personal baby humidifier will automatically turn off at the specified time (4 or 8 o’clock ). Or when the water runs out, it will also be an automatic shutdown. Besides, it is small, light and easy to