7 LED LIGHTS: 7-color LED lights (can be turned on/off) create a soothing effect. You can also press the Light button to adjust the 7 LED lights (color on/changing). Each of them is adjustable between bright and dark modes, and can be continuously lit. Large night light in the chamber. 2 MODES OF OPERATION: You can easily press the Mist button to choose a timer setting as you like, continuous working mode and intermittent working mode. (Green light mode: 3 hours model, will automatically shut down after 3 hours; Red Light Mode: Continuous fog coming out.) QUIET ULTRASONIC OPERATION: Quiet ultrasonic operation makes this diffuser a great option for use in a nursery or workspace. A quiet atmosphere within 35 dB can provide a quiet and comfortable night’s sleep. Improve air quality more effectively. AUTO SHUT OFF: This aromatherapy oil diffuser is cool to the touch and has an automatic shut-off switch when the reservoir is empty, protects against burns and provides safety, energy