Medical graded portable oxygen concentrator available at an affordable price. This machine renders 0-5L continue flow, comes with 1x battery, car charger, and carry bag. Can also be used on electricity 24/7. Keeps concentration at 93%+-3%, even when used at 5L/min. Usually recommended for COPD patients and patients with lung disease. Weigh 5,4kg. Extra accessories optional, e.g. trolley and extra.