Oxygen concentrator from Drive DeVilbiss Healthcare, 5-liter capacity. • Operating hours: 40 hours • Condition: New, used only twice Model: 5-Liter Oxygen Concentrator (525PS) Specifications: • Flow up to 5 liters/minute • Suitable for home use • Stable performance and high reliability I bought the device a while ago for 2750 SAR and only used it twice. The device is new, with its box and accessories. The device is ready for inspection and testing, and the operating hours are shown in the picture. Price: 2000 SAR