COBRA CB RADIO 40CH 10 WEATHERHAND HELD 10 WEATHER HAND HELD. SoundTracker technology reduces static and noise, 40-channel, 4-watt output power, 4-mile range, High/low power switch, Speaker/microphone jack, 2" W x 6 3/4" H x 1 3/4" D, Requires 9 AA batteries (not included) or DC power cord (included)