Yaesu MLS-100 Speakers are essential equipment for an top-notch installation. These speakers feature an all black plastic chassis and grill and black metal mounting bracket. The attached 6 ft. 6 in. cable has the mono miniature plug, 3.5 mm size that connects to the external speaker jack of most transceivers. In mobile installations, often the body of the radio is mounted in a location that makes an external mobile speaker a necessity. The Yaesu MLS-100 is a great choice, even for a potable or base setup.