Thank you for viewing. I am selling this because I purchased it during the COVID-19 pandemic but never used it. It is in the same condition as when it arrived, and I have never taken it out of the box. * No pets. No smoking. Comes with warranty and instruction manual. * Price negotiable The medical oxygen concentrator M102-C5L achieves an oxygen concentration of 93% and has a flow rate of 5L, with a slim and quiet design. - Model Name: M102-C5L - Oxygen Concentration: 93% (±3%) - Flow Rate: 5L - Features: Slim & Silent - Application: Medical oxygen concentrator Can be used for pet care, care for those battling illness, etc.