This is gently used and still has a lot of life left in it. It is showing 849 therapy hours. INCLUDES- CPAP Machine with humidifier, brand new in package mask and hose, and carrying case CPAP FEATURES AutoAdjust technology ensures that you have the optimum pressure for your therapy throughout the night by continuously adjusting the pressure to match your needs  Quietest auto CPAP among top-selling devices - only 26 dBA Large, backlit LCD and easy-to-follow patient menu Auto ON/OFF function Extra air inlet and fine particle filter included Large, slip-resistant pads on bottom of unit to minimize movement on night table during the night  SmartFlex:   Tracks each and every breath - detecting onset of inspiration and expiration, and automatically adjusting relief pressure to proper levels. By reducing pressure at the beginning of exhalation and returning to therapeutic pressure upon inhalation, SmartFlex ensures the maximum benefit of prescribed therapy, and assures a comfortable night's sleep.  The SmartFlex feature can be unlocked so patients can easily adjust settings. Integrated Heated Humidifier: DeVilbiss designed the chamber to hold enough water for a full night's sleep and is powered by the CPAP unit; eliminating the need for bulky power adapters or extra hoses.  The humidifier chamber is easy to remove and designed to maximize humidity thanks to a stainless steel heat transfer plate with a larger surface area. SmartCode:  No additional fees or equipment -- SmartCode is built into each and every intelliPAP.  Starting the day after your first treatment, the IntelliPAP machine begins to display SmartCode messages on your machine's LCD screen. Each message is a unique code containing the results of your sleep therapy. The IntelliPAP confirms compliance and the SmartCodes report adherence is based on the best consecutive thirty days of usage.  All you need is an internet connection, any web browser (Microsoft® Internet Explorer®, Mozilla® Firefox®, Apple® Safari®) and the IntelliPAP AutoAdjust CPAP Machine. DC Power (Cigarette Lighter Adapter): The Devilbiss Auto CPAP is equipped with a DC plug on the back of the unit. This allows the user to connect the Auto CPAP to an external DC battery source. The Devilbiss DC cord with the Auto CPAP can be powered by plugging into a cigarette lighter plug. This is ideal for traveling by car, boat, or recreational vehicle that is equipped with a cigarette lighter plug