Installed Car Kit. This handsfree installed car kit is a state of the art product for fixed installation. Provides excellent handsfree conversation, full duplex with echo cancellation, clear and distinct speech with use of external loudspeaker, integrated radio mute function, timer controlled switchdown to save car battery and 12/24 volt power system. NOTE: External antenna (part # ANTSPCLSPIKE) and pedestal mount (part# Mount Std) NOT included. Professional Installation Recommended!