2. Effectively improve respiratory diseases, easy to be absorbed, no stomach injury and high utilization rate. 3. With atomization function, it helps to relieve fatigue and prevent infection, no side effects. 4. Simple to operate, clear operation interface and the elderly can also operate independently. 5. Timing button design, you can set according to the actual situation, automatically shut down after running out of time. 6. Noise reduction mute, less than 40 decibels, does not affect daily work and life. 7. Multi-layer filtration, air circulation flow, filter harmful gases and dust, healthy and reliable. 8. Ultra-high purity oxygen with the concentration of 93% and stable continuous operation for 24 hours. 9. Large flow, support two people to use at the same time, the concentration does not decay after long time use. Specification: Item Type: Oxygen Generator Material: ABS Color: As Pictures Show Optional Plug: EU Plug, US Plug Voltage: 110-240V Power: 125W Oxygen Concentration: 50-93% Oxygen Flow Rate: 0L-5L Temperature Range: 5-40℃ Output Pressure: 40kpa-60kpa Oxygen Production Method: International SPA pressure swing adsorption Noise: ≤40 db Item Size: 41 * 20 * 48cm / 16.1 * 7.9 * 18.9inch Package List: 1 * Oxygen Generator 1 * Adult Mask 1 * Children Mask 1 * Atomizing Connection Tube 1 * Adjustable Liquid Cup 1 * Atomized Mouth 1 * Remote Control 1 * Headset 2 * Filter Cotton(1 * White Filter Cotton + 1 * Black Filter Cotton) 1 * Oxygen Tube 1 * Pen Type Oxygen Tube 1 * Wipe Cotton Sheet 1 * Power Cable