1Help patients recover after surgery, improve patients' hypoxia symptoms after surgery such as dizziness, headaches, tinnitus, nausea and vomiting, etc. 2Solve youth's anoxia worries, effectively alleviate youth's fatigue, sleepiness, stress, listlessness, weakness, and shortness of breath. 3Relieve hypoxia in the elderly, increase the level of arterial blood oxygen partial pressure and oxygen saturation, and promote metabolism, which is one of the important methods to assist in treatment of many diseases. 4Negative ion intelligent oxygen production system, ultrahigh concentration, longlasting oxygen supply. 5Atomization function, improve respiratory diseases, easy to absorb, good effect, does not hurt the stomach, high utilization rate, no side effects. 6Mute design, it doesn't disturb your sleep. Multilayer filtration, assure clean oxygen production. 7Provide timing button, oxygen inhalation time can be set on demand, simple button design, easy to operate. 8Large flow, two people can inhale oxygen at the same time, bring you convenience. 9Universal wheel, convenient to move, saving time and effort. Grooved handle for easy transportation up and down. 1005 liters flow can be adjusted arbitrarily. Removable external design, easy to add water and clean.