The OZ-5-01TW0 Oxygen Concentrator is designed to provide supplementary oxygen to patients who have been diagnosed with oxygen therapy. It delivers a high concentration of oxygen and is used with a cannula to channel oxygen from the concentrator to the patient. This device may be used at home or Institutions. Key Features: Very good alternate for bulky Oxygen Cylinders. Cheap, Convinient and Reliable with full 2 years' warranty. 5liters oxygen concentrator with built in nebulizer. Intelligent a