This uni-directional, condenser microphone has an adjustable stem and plugs into the LBB3537/20 Microphone Control Panel for quick and convenient use. It comes in two lengths: 12.2 and 18.9 in. It contains a built-in plop and windshield. A light ring indicator shows when the microphone is on.This lightweight and compact handset and cradle enables 2-way conversations between conference participants. The handset is coil cabled to the cradle and the cradle is connected (6-pole RJ) to Concentus and interpreter units. For permanent installations, mount the unit to a table or wall using screws. In portable installations the handset can be attached to an interpreter unit with the aid of the LBB3556//00 Mounting Plate. Dimensions: 2.08 x 8.26 in