1.Principle The protable oxygen concentrator adopts advanced physical adsorption theory ——Pressure Swing Adsorption principle to separate the oxygen from air at normal room temperature and atmospheric pressure . FY600 delivers a flow of oxygen op to 5L/min in this lightweight package that can be easily carried and used away from home .While FY600 is operating, it produces oxygen continuously; but oxygen is delivered only during the beginning of inhalation ,when it is most beneficial.There are three ways to supply power to FY600 portable oxygen concentrator:1, From a power supply that connect to FY600 unit and to a 100-240volt,50/60HZ,AC outlet .The power supply also recharges the battery over adapter. (FY600 can not operate when recharging)2, From an automobile’s 12V DC auto adapter outlet .A cord with the correct receptacle connects to the FY600 unit and to the DC auto adapter outlet to supply continuous power and recharge the battery. (FY600 can not operate when recharging) (Many boats also have a 12V DC auto adapter outlet)3, From an internal battery pack .A single, rechargeable battery pack can supply power for up to 60 minutes.2 pictures BatteryLighter ConnectionCableAdapter3. Main specifitationMODEL FY600 Portableoxygen concentratorRated Oxygen (L/min)0.6 Oxygen content ≥90% (v/v) Noise [dB(A)] ≤50 Outlet Pressure (MPa)0.04 0.06 Voltage DC13V 14A Battery powerAh 4 Net Weight (Kg) 4.2 (with battery) Dimensionmm 343 * 186 * 134