The ClearCom CC-40 is a single, enclosed ear, general purpose intercom headset with a flexible boom with and a dynamic microphone with a 5.5 foot cord terminated with a 4 pin female xlr for use with standard 4 Pin Male ClearCom Intercom Beltpacks like the CLCM-RS-702. The headsets are durably designed with comfort in mind and provide excellent audio isolation.