This unique, new air care system utilizes hydrogen fuel cell technology to operate! It requires no batteries and refill components are completely recyclable. Refill formulas contain no propellants or VOCs only pure fragrance and odor neutralizers. Decorative, discreet dispenser installs in one minute, has no moving parts, is noise free and has high or low settings for 60 or 90 days of refill life. Dispenser mounts on wall or you can set it on horizontal surfaces for offices, etc. Powerful, customer-proven, preferred fragrances deliver a consistent level of fragrance throughout refill life. All refill fragrances contain Microtrans (odor neutralizer) to break down and eliminate odors. Cool Blue has watery marine notes blended with hints of bergamot and rosemary. Six refills per case.