Portable Oxygen Concentrator, 1-7l/Min, 30%-93% Purity

Dedakj portable oxygen concentrator, 1-7l/min oxygen flow adjustable, stable adjustable 30%-93% concentration oxygen, suitable for home and personal care de-1a ac 220v specifications: flow range: 1-7l concentration: 93% ± 3% noise of the entire machine: <45 db (a) power supply: ac220v 50hz input power: 120 w. net weight: about 13.2lb limit size: 13.4 x 7 x 12.2 inch oxygen output temperature ≤ 46 ° c; tip: the length of the oxygen tube must not exceed 3 me must not be folded waterproof quality: ipx0