With a black anodized finish and a frequency response tailored for enhanced presence and improved voice quality, Sony's ECM55B Omni-Directional Electret Condenser Lavalier Microphone is well suited for a wide range of applications. The microphone features a two-way powering system, meaning it will work through an AA-size battery or an external power supply. And the head of the mic weighs only 6.5 grams (0.23 ounces).