Features: - Dual-channel, infrared (IR) wireless microphone system - IR System allows wireless (line of sight) transmission without typical crosstalk from RF systems - Equally distributes teacher's or presenter's voice to all areas of a room - Basic system includes: Body-Pack Transmitter; belt clip; and neck lanyard with Lavaliere Mic (BCWBT), Headset Mic (BCHM), and Body-pack Mic (BCBM); Dual-Channel Wireless Receiver (BCWR); and two Infrared Sensors (BCIRS) - Advanced system packages (see below) consist of additional amplification equipment to reduce effects and distractions of background noise and poor room acoustics