Advanced Instant Vapor Therapy Turn any room into a tranquil, healthy spa environment. Stylish base and cover No chemicals, just add water Essential oil may be added for instant aromatherapy Good Vibrations - Safe ultrasonic sound pulsations create a soothing, healthy mist. Hypnotic Color - Electronic element powers six rotating LED lights. Color change display may be controlled by separate on/off switch. AC Adapter Included - Safely converts 110 Volt power to low 24 VAC from standard wall socket. UL, CYL, CE approved.