The pulse dose placing ranges from 1 to 6 LPM. What's more, it features a steady setting of 1 to 3 LPM for precision oxygen. The battery retains both pulse dose manner chugging for approximately 4 hours and approximately 1.5 hrs working in the continuous manner. The Oxygen Concentrator Store https://johsocial.com/story3277543/what-does-oxygo-portable-oxygen-concentrator-mean