Yuwell Oxygen Concentrator 8F-5AW, here are the details you asked for:
Flow Rate: 0.5 – 5 L/min
Maximum Pressure: 40 – 70 kPa → about 5.8 – 10.2 psi
Sound Level: ≤ 48 dB(A) average, whole unit ≤ 52 dB(A)
Volume / Capacity (Oxygen flow): 5 L (per minute)
Power (Input Power): 400 VA ≈ 400 W
Oxygen Concentration: 95.5% – 87%
Free delivery avaliable