... manner. b. American imported molecule sift helps produce pure oxygen.c. Oxygen density monitor d. High and low voltage alarming systeme ... Working Time 10,000 hours AccessoryNebulizing Kit(optional), an oxygen cannula(180cm), a humidifier, anti-dust sponge(2pcs), ... connection tube(1 pc, 10cm) 4. ApplicationSuitable for oxygen therapy or oxygen healthcare in family or care room in hospital.Packing ...