New Yuwell Oxygen Concentrator New Yuwell Oxygen concentrator 5L ( F7-5 ) * Yuwell Oxygen Generator ( F7-5 ) 5L * Power: AC 220V at 50Hz 500VA * Oxygen Flow Rate: 0.5 - 5.0 L/min * Oxygen Concentration: 95.5% - 87% * Output Pressure: 40-70 kPa * Operating Noise: 53 dB * Weight: 27 kg * Features * Oxygen Concentrator Low Alarm * Pressure Cycle Failure Alarm * Power Failure Alarm * Compressor Failure Alarm * Oxygen Concentrator ( F7-5 ) Includes: * 1 × Humidifier Bottle (on the device itself) * 2 Filter Paper (one on the device and the other extra)