This Portable 1L-3L Continuous Flow Lightweight Home Oxygen Concentrator is the perfect solution for those in need of supplemental oxygen. This lightweight, compact machine is easy to transport and use and provides a continuous flow of oxygen up to 3L per minute. It features adjustable oxygen concentration settings, low noise levels, and a built-in oxygen purity monitor. With its built-in batteries, it is an ideal choice for home use, travel, and exercise. Get the relief you need with this convenient and reliable home oxygen concentrator.