Compact! Using innovative cold air diffusion technology, meaning that during the high-pressurized dispersion process the fragrance oils are transformed into a lightweight, dry nano-mist, which stays suspended in the air longer and offers more coverage. This type of advanced atomization technology is also residue free and safe for pets, children and furniture.  * Professional scent nebulizing technology: the waterless essential oil Diffuser adopts the cold-air diffusion technology which takes the high-quality fragrance oil micro-droplets to everywhere in your home or commercial places without any heat or water. Spending less than 0.5Ml per hour of use in the highest grade.