Brilliantly designed, with simple controls and an exceptionally quiet motor, the Stratus 5 Oxygen Concentrator provides continuous medical grade oxygen, up to 5 LPM, to patients 24 hours a day, 365 days a year. The slim profile, sleek design, and rich black coloring of the Stratus 5 Oxygen Concentrator make it a great option for home oxygen users who are tired of big, noisy machines and inconvenient oxygen tanks.