VARON 3L Portable Oxygen Concentrator NT-03+Extra 4-Cell Battery

NT-03 comes with a 4-Cell battery, buying extra batteries to enjoy longer outdoor use. NT-03 Package+Extra 4-cell Battery:Extended use time of up to 5H NT-03 Package+Extra 8-cell Battery:Extended use time of up to 7.5H Product Features: 3L/min oxygen flow Compact and lightweight, only 3.1lb Ultra sense technology Replaceable external battery Easy to operate Product Description: Easy to Carry The NT-03 weighs only 3.1 pounds and has overall dimensions of 9.25*3.94*5.55 (L*W*H) inches. It also comes with a shoulder bag for convenient carrying while you are out and about. The carrying bag is designed with ergonomics in mind and has adjustable straps, which can be adjusted to fit your height and body type for a more comfortable carrying experience. This allows you to get supplemental oxygen whenever and wherever you need it. Replaceable Battery The NT-03 portable oxygen machine features a replaceable and rechargeable 4-cell battery that frees you from the constraint