Colored light, this moisturizer totally meets my need. 2 light function and 2 mist modes Easy to use, keep the power button for 3 seconds to turn on the light function and switch white light to the colorful light. The function of colorful light is to make you feel relaxed. No Noise-Small humidifier can make some noise when produced to moisture. Usually somewhat quiet - you should not disturb anyone in the family while sleeping, reading or trying to work. Silent operation with a lower 26 dB allows you to sleep easily in a comfortable and quiet environment. Portable moisture adjuster device,USB powered, so you can connect it to all USB interfaces. This humidifier is compact and convenient to use in office, yoga, car, bedroom, and travel. Easy to carry because it's small and gentle 2 SPRAY MODES -  water tank that keeps your room humidifier running for more than 6 hours after one filling! This little moisturizer has 2 mist modes. When you press the button for the first time, it sprays continuously for 4 hours. When you press it again and it will spritz (stop 3 seconds) for 6 hours. Built-in water level sensor automatically turns off when water is less than safe water level. Gentle Reminder ,please make sure to soak the cotton a few minutes before turning it onLeave a charging connector when using it because it does not have a battery