This Oxygen Concentrator Generator FEATURES: 1. It is portable oxygen concentrator with PSA (Pressure Swing Adsorption) technology to get the high-purity quality oxygen. 2. Especially for home care, traveling, car,ect. Outdoor application Potential Users: *The elderly: Improving brain functioning as they develop dementia and other conditions. *White-collar women: Skin care, Skin nutrition and elasticity maintenance, Reduction of sub-health status. *Pregnant women:Helpful to fetus development. *Businessman: Relaxing physical and mental tension, improving physical ability, reducing sub-health status and improving work efficiency. *Students: Improving remembrance and reducing mental fatigue. *Plateau tourism lovers: Reducing the symptoms of hypoxia on plateau.