The EC-2018 is the first hand microphone to have the controls on the outside case! One of RF Limited"s truck toyz, this ""Road Noise" echo microphone has dual echo controls on the outside of the mic and external controls on the back case for one hand adjustments!, Adjustment for the Echo Level and the Echo Delay controls "on the fly" to create Whammy Sound Effects!, A new, custom echo chip (available only in the EC-2018 TURBO) provides the widest echo range - from the new robotic sound called ALIEN VOICE, to a full 600 msec, echo delay called REFLEX ECHO, Comes pre-wired - Fits 4 pin Cobra/Uniden/newer Midland, Access holes in teh back case for output and talk back controls, Metal front grill and high quality neoprene mic cord, Contains full instructions, wiring chart, and specifications, ECM (electret 1000 ohm condenser microphone), On the Back, Echo Volume control, Microphone hanger and primary back case screw, VR3 Talk Back volume control, VR2 Output volume control, Echo Delay control, Push to Talk (PTT), Battery cover, SKU: CBDST2230