Oxy-med Oxygen Concentrator is a unique stationary concentrator that delivers the features homecare providers want and patients deserve. It reduces operating costs with a design that is: 1. Lightweight - only 41.9 lbs. 2. Smaller and sleeker. 3. Easy to store and transport. 4. Low maintenance. 5. Quiet Simpler for patients to use and maintain. 6. Nebuliser Included 7. Larger LCD Display 8. Alarm 9. Double Filter(Humidity Filter, Heppa Filter) 10. Two years for any manufacturing defects