The GMD1208 is a microphone for Grandstream's GVC3220 Ultra HD Multimedia Video Conferencing System that can expand the overall audio pickup area. This desktop microphone has a built-in Bluetooth module that allows pairing with other Bluetooth devices to provide HD voice quality. With ultrasonic signal connection, long battery life, patented 2.4G/BT mode and error-resistant long-distance transmission, the GMD1208 brings mobility and flexibility to create a simple and productive conferencing solution.