Oxygen concentrators,2.2-inch color LCD screen, only 13kg,American molecular sieve, HEPA air filter, high-efficiency and quality Flow rate 0-10L/minPurity93±3%Outlet Pressure (Mpa)0.04-0.05Sound Level40dbPowerAC220V±10%, 50/60±1Hz; Power Consumption220WTimerPresent Working Time, Accumulating Time, Presetting Time from 10mins to 99hoursAlarmPower failure alarm, High&Low pressure alarm,Net ...