Cardioid 18-inch Shure Microflex MX400D Series microphone is miniature electret condenser gooseneck microphones with a desktop base and an attached 10ft (3m) cable. The desktop base allows these microphones to be used in multipurpose rooms where quick set-up is required, or where permanent installation is impractical. The Microflex Gooseneck microphones bring a whole new meaning to the word flexible. Beyond their fully adjustable goosenecks lies a new level of flexibility the new Microflex interchangeable condenser microphone cartridge. Designed for easy replacement and available in cardioid polar pattern, the interchangeable cartridge offers wide frequency response and accurate sound reproduction for a broad variety of applications, such as houses of worship, courtrooms and conference centers. Plus, the condenser cartridges fit every model in the new Microflex product line for enhanced convenience and consistent sound.