SimplyGo is the only portable oxygen concentrator (POC) to offer continuous flow and pulse-dose delivery in a single device weighing only 10 pounds. SimplyGo has more than twice the oxygen output of any POC weighing ten pounds or less. That means that SimplyGo is able to keep up with your portable oxygen needs today and tomorrow. One of the keys to SimplyGo's portability is its lightweight and compact battery. SimplyGo's battery is immediately accessible and can be easily changed by you. There are no awkward external battery belts or connectors that get in the way, or hard-to-maintain internal batteries. Before embarking on any extended airline travel with a system different than what you normally use, be sure that you are tested on the system by your physician. Portable Oxygen Concentrators typically use pulse dose technology (SeQual Eclipse has both pulse and continuous flow options). Flows needed for adequate saturation with these units may be different from what you normally use. Remember, at high altitude during flight you may require an increased oxygen flow.