O2 Concepts Oxlife Independence Portable Oxygen Concentrator takes POC performance to the next level. With patented EnergySmart technology, it boasts the longest battery life in class and delivers over three times the flow of the leading POC. With the Oxlife Independence by your side, you will enjoy unlimited oxygen. No longer constrained by the limitation of tanks, the world is yours. Feel free to travel in Airplanes, Cruise Ships, Rental Cars, and Hotels. With DNA Technology, it is the world first smart POC. DNA means you can have the machine alert a caregiver or loved one if there is ever an issue with your ambulatory oxygen.