DEDAKJ DEDAKJ_DE-2A Oxygen Concentrator  (2-9 Ltr/Min.)

??Oxygen Output?: Over 30-90% oxygen purity, 2-9L/M adjustable flow rate, let you enjoy a clean air at home. Delivers a steady stream of up to 90% pure oxygen out of normal air. ??Multi-layer filter??The oxygen system of this product has coarse dust filter, fine dust filter andthree bacterial filtration treatment for the input air respectively, finally, theoxygen is fresh and clean after filtering , and the two front layers filter canbe replaced without disassembing, the user operate it comfortably. ??Widely used?: Respiratory system diseases, cardiovascular and cerebrovascular diseases; plateau hypoxia; middle-aged and elderly people, pregnant women, students who have been engaged in mental work for a long time; people who have long been engaged in underground or confined space operations, excessive People who are exhausted from exercise and lack of oxygen. Note: This machine is used for family health care, not use for serious disease.