The iGo Portable Oxygen System is the perfect solution for keeping an active lifestyle. This lightweight, 3-liter, portable oxygen system provides two modes of operation - continuous flow or PulseDose delivery. The reliability and safety of PulseDose oxygen delivery has been proven effective in clinical testing as well as through independent tests performed by physicians and respiratory therapists. The iGo comes complete with a battery, AC power adapter, mains lead and DC power adapter. The iGo includes the DeVilbiss Oxygen Sensing Device and service alerts to give peace of mind that the iGo is delivering exactly what is required. Integrated PulseDose oxygen conserving technology extends the use time of the DeVilbiss iGo Portable Oxygen System|Built-in oxygen sensing device ensures accurate oxygen delivery and reduced periodic maintenance schedule|High-performance capabilities, compact design weighing less than 20 lbs with battery|Fast battery charge time of 2 to 4.5 hours dependent upon the flow setting|Easy-to-read battery life gauge|OxyTrack Software provides an integrated solution for viewing performance and usage information on any DeVilbiss iGo Portable Oxygen System|The external iGo Battery Charger is designed to charge batteries separate from the iGo unit