Portable Home Oxygen Concentrator Generator Air Purifier Machine Features:  Suitable for home oxygen supply, health care function, improve the body oxygen supply system, supplement oxygen, improve health. Using hard glossy safety engineering plastics as the cabinet, streamlined, comfortable and elegant design style, portable, stylish and beautiful. Intelligent infrared control system: large-screen LCD display, support intelligent operation and set oxygen supply time, very convenient for the elderly, you can read the relevant data on the screen. With timing function, can reach a maximum of 999 minutes.  Ultra-quiet power saving: running noise is less than 45dB, suitable for long-term oxygen absorption, input power ≤ 90W.  Oxygen anion: When oxygen is concentrated, our products can release negative ions, help the lungs to breathe faster and absorb more oxygen. Can concentrate anion and oxygen, promote each other, improve immunity, brain function, myocardial function and sleep quality, the anion function is independent of turning on or turning off. Adjustable Oxygen Flow 1L/min-5L/min Oxygen purity 30%-90% Support continuous oxygen throughout the day.can continuously work 24 hours. Specification:  Condition: Item Type: Oxygen Concentrator Color: As Pictures Show  Material: ABS Working temperature: 5°C-40°C Humidity: 20%-60% Atmospheric pressure: 86KPA~106KPA Pulse: within ±5% of the red value Mode of operation: intermittent operation Pressurization method: pressurization by a pressure pump Decompression: Apply automatic air release mode Air release: fast manual air release mode Pressure sensor: capacitive pressure sensor Storage capacity: a set of 90 measurement working principle: PSA (pressure swing adsorption) input power: ≤ 90W Oxygen concentration: 90%~30% (room temperature 0.1MPA) Oxygen flow rate: 1~5L / min Oxygen identifies odorless, colorless, combustion-supporting gas Working noise: ≤45dB Working environment requirements: no corrosive gases Remote control power supply: 2*AAA batteries(Not included) Size: Approx.32.5 x 19.8 x32.3cm / 12.7 x 7.8 x 12.7in Package list: 1 x Main Machine  1 x Remote Control  1 x Earphone Type Oxygen Inhalation Device 1 x Water Injector 2 x Filter (white, black) 1 x Sealing Ring and Rubber Stopper 1 x Pen Type Oxygen Pipe 1 x Power Cable 1 x Instruction Manual Note:Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.