Wireless dual vocal set. Includes (2) SKM 825-XSW handheld transmitters with mute switch and e 825 capsule (cardioid, dynamic), (1) EM-XSW 1 DUAL two-channel stationary receiver with internal antennas, (2) MZQ 1 microphone clips and (1) NT 12-5 CW power supply, frequency range: BC (670-694 MHz)