*Certified Pre-Owned* Product Features: Designed for full time usage; 24/7 Single battery lasts up to 6 hours 30 minutes and double battery can go up to 9 hours Inogen Connect Mobile Application FAA Approved Quiet operation at only 38 decibels Product Specifications: Pulse Dose 4.7 Pounds (with Single Battery) Intelligent Oxygen Delivery Technology Up to 6.5 Hour Battery Life (single Battery, Setting of 2) Includes the G5 unit, single battery, AC power supply, DC power cable, and carry bag. Introducing the newest machine from the awarding winning line of Inogen portable concentrators; the Inogen One G5.The Inogen G5 is a robust and versatile concentrator that provides 1 to 6 flow settings in a lightweight design weighing under 5 pounds. Utilizing Intelligent Delivery Technology, it is capable of 24/7 oxygen delivery with oxygen production of 1260 ml. It also features a long battery life, access to Inogen Connect, a large and user-friendly LCD screen, and quiet operation Dimensions: -7.19 inches Wide x 3.26 inches Deep x 8.15 inches High with single battery -7.19 inches Wide x 3.26 inches Deep x 9.03 inches High with double battery Weight: -4.7 Pounds INCLUDES: unit w/ battery, carrying case and both AC & DC power supply Warranty: 1 Year BATTERY LIFE Setting of 1: 6 hours 30 minutes with the single and 13 hours with the double batterySetting of 2: 5 hours with the single and 10 hours with the double batterySetting of 3: 3 hours 30 minutes with the single and 7 hours with the double batterySetting of 4: 2 hours 30 minutes with the single and 5 hours with the double batterySetting of 5: 1 hour 50 minutes with the single and 3 hours 48 minutes with the double batterySetting of 6: 1 hour with the single and 2 hours 45 minutes with the double battery A prescription is required to purchase this item Please note - Any smoking while using the unit or evidence that the unit has been used in a smoke filled environment will void the warranty. Customer will receive an Inogen One G5 or OxyGo Next unit depending on availability.