The Ava diffuser is an elegant solution to relax your home, office, or car and create a calming, soothing, or uplifting atmosphere. Adding just a few drops of essential oil to the diffuser pad creates a relaxing, calming, or uplifting environment in just a few minutes. The changing colors also provide a soothing, gentle glow. It operates silently. Since Ava can be powered either by a USB connection or batteries, it is suitable for use at home, at work, and even in the car.