Cobra 29NW Professional CB Radio - Instant Channel 9/19, Full 40 Channels, SWR Calibration, NightWatch Electroluminescent Illumination Display NIGHTWATCH - Fully illuminated front panel Display for easy viewing in day or night time conditions so you can stay focused on the road without distracting bright lights. SWR CALIBRATION - Ensure your antenna system is functioning at full strength giving you maximum performance for communication on the road. ANTENNA WARNING INDICATOR - Take the guess work out of checkng your antenna, a red light will automaticlaly illuminate if your antenna needs to be checked or calibrated. INSTANT CHANNEL 9/19 - Immediate access to Emergency channel 9 and information channel 19 to unsure you're driving safely from the very beginning 40 CHANNEL ACCESS - Navigate the complete range of 40 channels for full coverage of CB stations.