portable oxygen concentrator with carrying case

Portable oxygen concentrator with carrying case and accessories. Has a car and a wall charger. Used one time to go to a doctor's visit. Very low usage time under six hours.Pulse oxygen concentrator: oxygen concentrator with integrated breathing sensor. When inhaled, the product automatically releases oxygen and at the same time the breathing signal light flashes. If not inhaled, the product does not release oxygen. Very effective for extending the life of oxygen concentrators.Multi-layer filter: the oxygen generator uses high-quality molecular sieves and air compressors to extract high-purity oxygen from the air through the transformer adsorption separation process (PSA process) and multi-layer filtration.【Oxygen Concentration】Oxygen concentration: 93%±3%, 1-5 levels, adjustable flow rate, five pulse settings to choose from, oxygen flow rate up to 1000ml/min.Intelligent control: the oxygen concentrator has an accumulation/timing function, a power display function and an oxygen excellent for everyday use. first-class materials and excellent craftsmanship ensure long-lasting durability.