40 Channel CB with 4 Watt Output * X-Tra Talk Mic Gain Control * PA function, Dimmer Switch, Analog Power Meter, and Automatic Noise Limiter. * Instant Channel 9 * Full Size Microphone with locking connector * 5001 CB Radio. * 40-Channels. * 4-Watt Output Power-Delivers maximum communication range. * Xtra Talk Mic Gain-Boosts transmit audio sensitivity to give you increased voice clarity. * RF Gain Control-Adjusts reception sensitivity (range) for clear reception.