Oxygen flow (L / min):switch flow to 3L/ min or 5L/min 2.Oxygen concentration:93%±3% 3.Oxygen delivery pressure (Mpa):0.03~0.07 4.Noise dB (A): ≤ 50 5. (Atomizer(ml/min): ≥0.5) 6.Rated power: ≤300(AC220V/230V), ≤350(AC100V/110V) 7.Net weight (Kg): 16.5 8.With power failure alarm 9.High and low oxygen purity changeover function 10.With timer 11.With aroma-pod power socket12. the earliest delivery time will be with 3~5weeks 13.110V/50Hz and 220V/50Hz are available Power failure alarm: Yes