This ArOmis aromatherapy diffuser is a professional, therapeutic grade cold air pressure nebulizer designed with serious aromatherapy practitioners in mind. This base is made from beautiful wood in the straight line (Solum) shape in light blond (Lux) color. The bottles are made of clear glass and three styles are offered: The Merus with its smooth glass with gentle oval bowl tapering into a narrow neck with a flared rim on which sits its dedicated omni-directional cap; the Telum, which is a shorter version of the Merus with a uni-directional cap; and the stunning Vitus with artistic glass trails over its body and scalloped rim with omni-directional cap. The bottles fit into any color/style base.These units use no heat or water to vaporize oils, only 100% pure essential oils. They are designed for indoor use and are sold with electric AC power cord.