Flow: 1-5LPLM Purity: 3L @93% , 5L @70% Power: 290VA Input: 220V 50HZ Noise: 48dB Weight: 18kgs Sizez;41*28*51cm 1. Atomization build-in 2. Large oxygen flow supply meet daily demand 3. Multiple filter protection for oxygen safety 4. Imported oil-free compressor with USA technology 5. French imported molecular sieve with high effeciency 6. Smart self-diagnostic with multiple alarm system