home use portable oxygen concentrator generator 1-5l adjustable 30%-90% air purifier mini oxygen machine 24 hours continuous oxygen flow

this oxygen concentrator is matched with new high efficient air compressor and molecular sieve imported from usa. under the same consumption. weight: 5.4kg voltage: 110v-240v, 90w power consuption.now it is still the smallest oxygen concentrator with 1lpm 93% continuous flow.the users can use it for 24*7 hours home use and short travelling.color:white. size:26x 19.5x 38.7cm, noice: less than 40db,purity: 30-90%, oxygen flow: 1-5l/min, used at home.