AKG Perception Wireless Presenter System (BD A Band)The Perception Wireless high performance Presenter Set delivers brilliant sound and is surprisingly easy to use. The included CK99 lavalier microphone clips on quickly and easily, and provides optimum intelligibility for theater performances, presentations or talk shows. The SR45 receiver provides professional XLR and 1 4" jack outputs. Features 1 x SR45 Receiver 1 x PT45 Body pack transmitter 1 x CK99 L Lavalier microphone 1 x Universal power supply