Bosch LBB-9080/00 Dynamic Omni directional Fist Microphone for close talking applications. Rugged construction with CB style PTT (push-to-talk) switch on the side. Coiled 0.5m cable (extends to 1.2m) with switching contacts to trigger a mute circuit or pre-announce chime. Supplied with wall-mounting clip. Terminated in 5 pin DIN which can be removed and replaced with an XLR to suit any amplifier. Balanced output. 500 Ohms.