Feature Benefit RF Gain Adjusts receive gain in weak and strong signal areas. 4 Pin Screw-On Mic Connector Convenient removal of mic for storage and easy reach from anywhere inside the vehicle Power On/Off and volume control Squelch Control Elimiates background noise in the absence of a signal Stylized Design Reflecting the trends in new deisgns, sculpted features and muted graphics which give it a dynamic look that will compliment any of today's vehicles. Compact Design Easily installed into most cars and trucks Combination S/RF Meter Indicates incoming signal strength and output RF power output. CB/PA Screw-On Mic Microphone Selects CB operation or public address (PA) operation for communication outside of the vehicle with PA horn (not supplied). SpecificationsMetricLength : 178 mm Width: 114 mm Height: 44.5 mm EnglishLength: 7 Width: 4.5 Height: 1.75 Weight: 1 lb 3.9 oz ——————————————————————————– In the Box 19 DX IV CB Radio Heavy-Duty Dynamic MicrophoneMounting C Bracket and Thumb ScrewsMicrophone Hanger Bracket and ScrewsInstruction Manual Accessories CA M78 CHR- Black Chrome Premium Noise-Cancelling 4-pin Microphone – Black Chrome – Multi-Port Differential Dynamic Noise – Cancelling Cartridge – Voice Coil Diaphragm – Heavy-duty ABS Drop Proof Shell – 4-pin connector