The Sennheiser MMD 845, like a lot of our inventory, was added due to customers' requests. This is the capsule version of the e845 handheld wired microphone. It is a "dynamic super-cardioid vocal mic, which helps to reduce spill and feedback. Ideal for presentations, conferences, choirs, rehearsal rooms, and stage. Easily eliminates ambient noise. Superb high frequency reproduction." - Sennheiser. This capsule works with ew G3/4, AVX and 2000 series wireless. This capsule can be adapted for Shure wireless handhelds. Compare this to say a Shure Beta58.