Flow Rate (Minimum): ≥90% oxygen concentration, 0.5~5.0 L/Min Oxygen Outlet: Single Tank Capacity: 5 Liters Power Source: Electrical & Battery (3-hour battery life) Altitude Range: 0-10,000 meters above sea level Operation: Pulse Dose & Continuous Flow Adjustable Air Delivery: Yes Continuous Flow Rate: 5 L/Min Noise Level: ≥54 dB (A) Display: LCD Dimensions: 380 x 320 x 590 mm Weight: 18 Kg Compliance: ISO Certified, Meets International Standards