2017 Mercedes Benz convertible C-Class Cabriolet sport package comes with the Burmester high end 3D surround soundsystem impresses with 24 high-performance speakers, 24 separate amplifier channels and the combination of analogue and digital amplifier technologies. The new, three-dimensional listening experience. Car has heated seats and AIRSCARF neck-level heating, and the AIRCAP automatic draft stop system is an option for exceptional comfort during open-top driving 365 days a year. Within 20 seconds and at speeds up to 31 mph, the C-Class Cabriolet converts from a seductive soft top coupe to an open-air extrovert. The elegant, multi-layer acoustic soft top provides a comfortable, insulated ride that shuts out ambient noise and improves speech intelligibility, even at high speeds.