The JAY-5 Medical Oxygen Concentrator has a flow rate of 0-5L/min with purity of 93.+/-3%. Its outlet pressure (Mpa) ranges from 0.04 - 0.07, while its sound level is only at = 50db. Its LCD displays swith times, operating pressure, present working time, accumulating working time, presetting time from 10 mins. to 40 hrs. It also features an alarm system for both power failure and high/low pressure. It weighs approximately 25kgs.