Enjoy diffusing your favorite essential oil with this cool, retro style USB Ultrasonic Diffuser. Warm white with faux wood grain accents, classes up any decor! Enjoy hours of diffusing with a 90 ml capacity and 2 mist modes, continuous and intermittent with 7 color LED light settings. Features include automatic low-water shut off, BPA free and USB portability. Ultrasonic offers the best way to diffuse essential oil as its "no heat, dry mist" technology preserves the therapeutic properties of the oil. Ultrasonic Technology uses high-frequency, low-energy vibrations that break the essential oil into tiny micro particles. These micro-particles are dispersed into the air and are easily absorbed by the body for a greater therapeutic effect. With this technology, less essential oil is needed for maximum therapeutic benefit.