The Sony ECM-44B is an omnidirectional electret condenser lavalier microphone. Sony has made over five million professional ECM microphones, and the ECM-44 is an affordable option for general voice use. It offers great sound quality and is popular in business presentations and TV production. There are four versions of the ECM-44 with different connectors, and the ECM-44B has an XLR output and a power barrel for wired use. Key features include an emphasis curve and suitable frequency response for voice pick-up. The small capsule (8.5mm in diameter and 14.5mm long) makes it convenient. It can be powered by an external amp or a single AA battery, which provides thousands of hours of use. Technical specs show it has a 40 Hz - 15kHz frequency response, omni - directional directivity, and more. It comes with useful accessories like a windscreen, tie clip, instructions, and a mic case.

Using the Sony ECM - 44B is easy. First, decide how you want to power it. You can use an external microphone amp or insert a single AA battery into the power supply unit. Once it's powered, connect the microphone to your device using the XLR output. Attach the microphone to your clothing with the tie clip. For outdoor use, put on the urethane windscreen to reduce wind noise. When using, keep it close to your mouth for the best sound quality. As for maintenance, keep the microphone clean. Wipe it gently with a soft cloth. Store it in the provided mic case when not in use. If you use a battery, replace it when the sound quality starts to degrade or after about 6000 hours of use. Also, be careful not to expose the microphone to extreme temperatures or moisture.