Communicate in remote places with this 40-channel CB radio. It locks on to another CB radio with pinpoint accuracy using the precision PLL frequency control system. Automatic noise control ensures clear audio, even in noisy surroundings. Use the high/low power switch to easily adjust power usage for long or short range to conserve battery life. Connect an external antenna, speaker/mic or headphone/mic to enable better reach and communication. Bright LED displays channels in both bright and dark conditions. Built-in electrostat electronic microphone. Low-battery indicator. Includes charge jack and removable antenna. Powered by nine AA alkaline or rechargeable batteries.