household portable oxygen concentrator home 110v 220v flow 30%-90% adjustable oxygen generator psa oxygen machine blue

this oxygen concentrator is matched with new high efficient air compressor and molecular sieve imported from usa. under the same consumption.it is 80% more efficient than other models,5.4kg, 90w power consuption.now it is still the smallest oxygen concentrator with 1lpm 93% continuous flow in china. it is choice for the family who needs low oxygen therapy (less than 2lpm). the users can use it for 24*7 hours home use and short travelling.it has one year warranty