OXYGEN Concentrator-5L, Tested In Singapore. SPECIFICATIONS: Sleek, stylish and modern design. Compact, lightweight and easy to carry and move around with the built-in castors. High quality and robust external shell materials and fine workmanship. Medical grade components for many years of reliable operation (10 years) Stable oxygen supply. Flow adjustment and display. LCD display which shows total unit operating hours and a countdown timer. Wireless remote controller which includes ON/OFF and timer setting functions. Intelligent Alarm function. Quiet operation. Easy maintenance. Includes: humidifier bottle and hose, nasal cannula, T-fitting, spare filter, wireless remote controller, user's manual and a quick-start guide. Technical Specifications: Flow Rate: 0.5 - 5L/min Oxygen Concentration: 95.5% - 87% Max. Outlet Pressure: 40 - 70kPa Sound Level: 48dB(A) Input Power: 400VA Weight: 15.5kg Dimensions: 50cm x 39cm x 24.5cm (HxWxD) Warranty: 1 Year