Portable Oxygen Concentrator Small, Powerful, elegant, durable, and lightweight (2kg) battery Portable Oxygen Concentrator Get concentrated and pure oxygen with this Portable Oxygen Concentrator. With its sleek, lightweight, and non-clinical design, Portable Oxygen Concentrator doesn’t draw attention to itself. The small, powerful, elegant, and lightweight Portable Oxygen Concentrator isn’t just good-looking; it’s small enough to fit in most backpacks. It also has a stylish case for easy handheld carrying, or you can use the included carry bag specifically designed for your POC and go hands-free.