COLORFUL CYCLING LIGHT & NIGHT LIGHT - This cool mist humidifier has a VIVID colorful Cycling light setting creates a peaceful ambiance while delivering a soothing mist. It offers maximum relaxation for you. The night light could improve your sleeping quality.AUTO SHUT-OFF PROTECTIONHumidifier automatically shut-off when the water level is low or 4 hours automatic power-off protection. New ultrasonic technology supports an extremely quiet working noise