Specification: Product weight: 6.0kg Product size: 325x150x350mm Rated power: 110W Oxygen concentration: 30% 40% 60% 70% 90% adjustable  Oxygen flow: 1-5LMin five levels adjustable Running noise: 36dBA-45dBA  Inhalation method: ear-hook oxygen, nasal suction  Display control: LED display + wireless control Oxygen production method: molecular sieve pressure swing adsorption (PSA)   Note:  This is a supplementary equipment and is not intended for serious disease or those who stay alive solely on medical oxygen. If you suffer from disease,Please consult your doctor before buying
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