Beautifully patterned design Lux Trellis diffuser is conveniently portable with the use of batteries. Easy aromatherapy without water, simply add essential oils to the included refill pads and enjoy hours of continuous fan diffusion. BPA Free Plastic.Run Time: ContinuousOperating Modes: Continuous/ Off Light Modes: Continuous Blue LightPower: 3 AA Batteries (not included) or USB CordCoverage: Up to 200 sq. ft.Included: 3 oil pads and USB CordDimensions: 4x 7"