The Philips Respironics DreamStation provides automatic continuous positive airway pressure to treat sleep apnea and prevent snoring and choking during sleep. It offers respiratory comfort by automatically adapting to the user's breathing patterns. Consumable accessories such as masks and filters are available. It is equipped with a humidifier to prevent dryness of the respiratory membranes. It includes smart wireless connectivity to assess and monitor treatment progress via the DreamMapper application. It comes with a power supply that works on 110 to 240 volts for ease of use during travel, and also with a special travel bag for the device. Consumable accessories such as masks and filters are available. Recommended for sleep apnea patients under medical supervision. Consumable accessories such as masks and filters are available. Device origin: United States of America No defects in the device. The reason for selling is the availability of a newer generation device. Acclimation made easy DreamStation includes a set of tools to help make it easy for patients starting PAP therapy and for their continued long-term use. EZ-Start can help patients gradually acclimate to therapy, while SmartRamp allows users to fall asleep to lower pressures. Wake up to progress Each morning patients are greeted with a summary of their progress to motivate them to stick with their therapy. The display shows a simple trend of their nightly hours of use, followed by a summary of the last 30 days of "good nights" that have more than 4 hours of use. The Mask, nasal pillows, & Filters are provided. refurbished Not used.