Super-compact 9V battery-operated Micro-Receiver (2.63" wide x 4.21" high x 0.91" deep), Unbalanced output with level switch, DC input for external powering, Variable Squelch control and Power switch (internal) * Locking balanced mini-XLR output with level switch, Supplied XLR to mini-XLR cable, Headphone output with level control * Specially tuned, molded antennas, Special carry case included * Channel N4 (644.750 MHz) Lavalier System include CT7 Belt pack Transmitter and LM10 Lavalier Microphone