Check the listing for details. Workman Power/Tornado Echo Mic for CB/Ham Radio 4 pin Cobra/Uniden DM1000. Color: Black, Condition: New. Listed at 44.99 USD. Workman Power/Tornado Echo Mic for CB/Ham Radio 4 pin Cobra/Uniden DM1000 Power Microphone With Tornado Echo Functions! Fits Most CB Radios Having The Standard 4-Pin Mic Connector! Delay & Reverb, Talkback & More! Requires 1 9V Alkaline Battery ( Not Included). Fits Most Cobra, Uniden, Galaxy, Midland, Connex, Superstar CB's! Features Power Microphone With Tornado Echo Functions!Fits Most CB Radios Having The Standard 4-Pin Mic Connector!Delay & Reverb, Talkback & More!Requires 1 9V Alkaline Battery ( Not Included).Fits Most Cobra, Uniden, Galaxy, Connex, Superstar CB's!Talkback will not work if you can receive when no mic is connected to the radio. Details {{marketing_message_heading_1}} {{marketing_message_body_1}} {{marketing_message_heading_2}} {{marketing_message_body_2}} {{marketing_message_heading_3}} {{marketing_message_body_3}}