Type: Lightweight Portable Oxygen Concentrator (POC) weighing less than 5 lbs. Technical Features: Uses (CMV) technology to deliver a constant amount of oxygen based on breathing rate. Battery: Battery life up to 5.5 hours, which can be doubled with an optional external battery. Device Accessories: Extra battery, Car charger, Main charger, Carrying bag, Adult nasal cannula. Product weight 3 kg. Made in America.