Vitron C® Ascorbic Acid Iron Supplement, 1 Bottle Instruments warrants that the Portable Oxygen Select Ear:Left Ear warrants that the Portable Oxygen Concentrator POC (the Product) will be free of defects in workmanship and or material for the following period: Portable Oxygen Concentrator five (5) years from date of shipment * Battery 1 year from date of shipment Contents: EasyPulse POC concentrator Internal lithium ion battery Wall charger Car charger Comfortable carry bag with fully adjustable padded shoulder strap Arthro Thumbs Up Cup With Lid 65 mg of elemental iron (as carbonyl iron) which may minimize the common side effect of constipation