The Zoom M3 MicTrak is a mid-side stereo microphone with an integrated 2-track 32-bit float recorder, designed for on-camera attachment to DSLRs and mirrorless cameras. It features adjustable stereo width, records to microSD cards, and includes a built-in rechargeable battery. The M3 is part of Zoom's MicTrak series, combining a professional stereo microphone and field recorder into one compact unit.