The oxygen flow is adjustable in 5 levels. Kingon portable oxygen concentrator # p2 ; The kingon p2 portable oxygen concentrator is the ideal device for people who need oxygen therapy but are on the go. The kingon p2 portable oxygen concentrator is the ideal device for people who need oxygen therapy but are on the go. The kingon p2 portable oxygen concentrator is the smallest & lightest 1 litre oxygen concentrator in the world! Portable Oxygen Concentrator Kingon P2 for Sale | Zone Medical from i0.wp.com The oxygen flow is adjustable in 5 levels. Its lightweight and sleek design makes . 1l portable oxygen concentrator, 1060ml per minute ,◎ oxygen concentration is 90%—3%/+6% max.◎ 1~5 flows with different oxygen supply . The kingon p2 provides the patient with an unlimited oxygen supply outside the home with an o2 concentration of 96%.