Drive-DeVilbiss iGo2 POC is a new portable oxygen concentrator providing oxygen for O2 patients. This concentrator is small and compact, and easy to carry. It offers pulse flow oxygen and is equipped with a battery for greater portability. It operates from three different power sources--AC, DC, or battery. Take this concentrator with you in your car, RV, or boat. 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. What Comes In The Box?iGo2 Concentrator1 Battery* (with one year warranty)AC Power AdapterDC Power AdapterCarry CaseCarry StrapAir FilterUser Manual *Optional Extra Battery Available (125D-XB) Product Features and BenefitsLightweight weighs 5 pounds with battery, carry case and carry strapSmall compact design for easy carry alongSmartDose Auto-Adjusting Conserver TechnologyRugged designNo filter replacementsLarge, easy to read LCD screenRamps up with your breath rateProtective rubberized casing Light up battery indicatorLonger nipple adapter prevents kinkingEasy battery loading and replacement located the top of the carry case, not the bottomMost sensitive conserver trigger on the POC marketAudible alerts for low battery, low oxygen output, no breath detected in PulseDose mode, high temperature or unit malfunctionControl panel designed to be easily viewed whether sitting on the ground or under an airplane seat Storage space on carry case for two additional batteries