Nebulizer S5000 Compressor,nebulizer cup, angled mouthpiece, 6 feet of oxygen tubing, 5 extra compressor filters. Standard features: Quiet operation - less than 60 dBA. 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 - 0.5um-5um AC operation - 120V 60Hz. UL classified. 2-year limited warranty.