Electret Condenser, Wide Frequency Response, Battery Powered Only, Single AA Battery Provides 5000 Hours, For Live Sound and Broadcast The Sony ECM-44B Lavalier Microphone makes the exceptional quality of Sony's electret condenser microphones available for budget conscious ...Electret Condenser, Wide Frequency Response, Battery Powered Only, Single AA Battery Provides 5000 Hours, For Live Sound and Broadcast The Sony ECM-44B Lavalier Microphone makes the exceptional quality of Sony's electret condenser microphones available for budget conscious productions and a variety of sound reinforcement requirements such as lectures and demonstrations. Measuring only 8.5 x 14.5mm the ECM-44B reduces the visual distraction to the audience. The ECM-44B can be depended upon for clean bright yet natural reproduction.
To maintain its low cost this microphone operates on a single AA (does not accept phantom power) battery for over 5000 hours of service.