The REMstar Pro M Series CPAP Machine with C-Flex combines the amazing comfort of C-Flex, optional integrated humidification and our Encore Pro SmartCard capability to give you the power of enhanced compliance reporting of apnea/hypopnea index, elevated leak levels, snoring. It's the most versatile CPAP machine we've ever offered. The new platform design is convenient for travel with and without the integrated humidifier. The standard travel carry case has been updated with a new sleeker look. Optional travel accessories are also available for packing the device in a suitcase and for use when traveling internationally or when a portable battery or DC adapter is required.