The Schuco S5000 Nebulizer Quiet operation, less than 60 dBA. It is compact and lightweight, just 3-1/2 lbs. Easy to use and clean. Convenient cord storage compartment. Substantial compressor pressure, 35-45 psig. High compressor operating flow rate, 7-11 lpm. Therapeutic particle size, 0.5 µm-5µm. AC operation, 120V 60 Hz. UL classified with a 5-year limited warranty.