BOGEN GDU150 Dynamic Gooseneck Microphone Cardioid pickup pattern Outstanding speech intelligibility, feedback rejection, and user sound isolation High sound pressure capability and low sensitivity to breath/pop noise Rugged, reliable construction Integral multi-layer breath/wind filter Durable all-metal case with non-glare black finish Silent push-on/push-off talk switch on base  Features:  Self-Amplified : Yes Dimensions (LxWxH) : 2 x 2 x 19 Weight : 0.85 lb. Recycled Packaging : Yes Country of Origin : Korea (provided by manufacturer, not verified) RoHS Compliant : Yes Type of Packaging : Retail Box Warranty : 2 Years