Oxygenmachinevip: This is your ultimate choice if you want a high-performance and affordable 5L oxygen machine! Higher flow:up to 5L/min;Stable oxygen concentration: 93±3% ;Move with ease on 4 universal wheels ;Whisper- Quiet: Operates at ;43dB for peaceful nights. ;2In1 oxygen generation & nebulizer treatment ;24h/7d use;Smart Features: LCD display & timing function Special offer! Use Code  for Savings: