Retevis MB3 40-Channel AM/FM CB Radio Kit with Antenna, Full Set of Fixed-Mount Kit,ANL Noise Reduction, Emergency Channel 9/19, PA & VOX, Auto-Scan,External Speaker Jack,for Trucker Essentials

Flexible operations: CB radio base station supports AM and FM modes; AM helps you talk with distant truckers; FM enables you to communicate clearly; meeting your various use requirements

Supports PA systems; you can connect an external PA speaker system; NOTES; the external speaker (PA jack) and internal speaker operate independently in single-output mode; only one audio source can be active at a time; when an external speaker is connected; the internal speaker will mute automatically; to use the internal speaker; simply disconnect the external speaker; choose the speaker mode that fits your needs

Clear sound quality; CB car radios have an ANL feature that helps to reduce environmental noise; such as that from car engines; and provides clear call quality; enabling you to communicate clearly in dynamic and moving environments

Long Range CB Radio; 40 channels are legal for use; you can communicate without fear of local regulations

Small CB radio; the size is 124*101*36mm; the weight is 470g; you can easily carry MB3 without much pressure; mounting bracket; spare fuse; non-slip mat; etc; CB radio kit has complete accessories; install the radio to the vehicle easily

Dule voltages 12V&13.8V; 12V can adapt to common vehicle voltages to meet daily use; 13.8V can adapt to emergency 13.8V power systems; used in rescue; outdoor activities; expanding communication distance

Portable hand-free CB radio; VOX transmission signals can be used during busy hours, allowing the driver to focus more on driving while maintaining efficient communication; mic is compact but light; reducing the fatigue caused by holding the mic

Clear and easy-to-read screen; allows you to quickly understand the current settings of the CB machine; the screen brightness can be adjusted to suit environments with different brightness

Avoid accidental touches; The white buttons are separated from the black radio; the commonly used buttons are set independently to avoid accidental touches and changes to settings

SO239 connector: CB car radio can connect the PL-259 antenna; it enhances the signal to meet outdoor communication needs