9/10 new with essential oils Transform your space with the power of scent, using 100% natural essential oil blends. Our largest and longest running diffuser, this heat-free, whisper-quiet unit is both a functional and fashionable piece of decor for your home. KEY FEATURES Run time: 11-22 hours on a high or low setting. This diffuser can also be programmed to run in intervals of 1hr | 3hr | 6hr. Room coverage: medium to large-sized rooms like bedrooms, living rooms, dining rooms and open concept spaces up to approx. 700 sq ft. Material cement stone cover, BPA-free plastic water tank. This diffuser includes an optional LED lightband for ambience.