2.5 mm Microphone Input and Micro (2.5 mm) jack. To be plugged into the Microphone Input of your CI.
RF Filter for clear, crisp, exact reproduction of sound.
The standard length is 24". These act as antenna so though the length could be modified there is a limit. And this limit is determined by what the cord will be plugged into. So, you must provide exact details. Thanks!

Sold only with COMTEK FM systems. Not sold as an OEM product.