Frank Lloyd Wright Oya Carving Aroma Diffuser Product Size: 3.5" X 3.5" X 5.75" Material: Porcelain Case Pack: 24 The diffuser is electronic and comes with a Corded AC adapter. 4 timed settings at 30 min. 1 or 2 or 3 Hr. On/Off power button as well as a light button for colorful LED light visuals. The LED light cycles through 7 colors. the light can be always powered on as a night light. Press the LIGHT button to turn on the 7 colors changing in circulation and press again to choose the fixed color you like.