The clean and simple design of the Mini Majesto Essential Oil Diffuser disperses a fragrant mist with the touch of a button. Enjoy the benefits of aromatherapy by adding a few drops of 100% Pure Essential Oil to the 100 mL/3.38 fl oz water tank that will continuously run for up to 5 hours. Plug USB Cord into any USB Port for operation. Light mode options include rotating color lights, freeze color or light off.