The well-known Prisma SMART max device is an automatic CPAP device for treating sleep apnea and its resulting disorders. The Prisma SMART max device is designed to give the user a comfortable and effective treatment experience through smart technologies that help open the airway and maintain normal airflow throughout the sleep period. . . . It has been used very little and the device is very clean)) . . . It contains: - The main device. It generates continuous or automatic air pressure that helps keep the airway open during sleep. - Two masks (Philips Respironics). - It has a built-in heated humidifier, which helps to humidify the air to reduce dryness of the nose and throat. - Manuals.