Polaroid Pro Video Condenser Shotgun Microphone For The Sony Alpha NEX-C3, 7, 5, 3, F3, SLT-A33, A35, A55, A57, A77, DSLR A100, A200, A230, A290, A300, A330, A350, A380, A390, A450, A500, A560, A550, A700, A850, A900 Digital SLR Cameras Electret Condenser Technology: Sensitive To Low Volume Sources Slide Shoe Mounting With Wheel Lock &lt;&gt; Lithium Battery Provides Longer Use Cardioid Pickup Pattern Diminishes Sound From Behind User Selectable Pickup Angles Choose Either 90 Degree or 120 Degree Battery Level Monitor &lt;&gt; Windscreen Included; Great Indoors And Out &lt;&gt; Lightweight