WIRELESS,R42, (2) BODY PACK ONLY. Audix AP42 BP Wireless System A two Channel wireless system featuring two BP60 bodypack transmitters paired with the R42 two channel diversity receiver. The bodypacks may be used with any lavalier, headworn, or instrument microphone in the Audix line as well as guitar or bass. Included is a rack mount kit and BNC cables for front mounting antennas. Available Frequency Bands: A = 522 MHz-554 MHz B = 554 MHz-586 MHz Audix AP42BPA Includes: 2 x B60 Bodypack Transmitters 2 x Antennas 1 x Audio Cable 4 x AA Batteries 1 x Power Supply 1 x User Guide 1 x Rackmount Hardware 2 x BNC Cables Audix AP42BPA Features: R42 Two Channel Diversity Receiver: 32 MHz wide spectrum tuning receiver 106 pre-coordinated frequencies for quick, easy, and reliable setup One-touch auto scan for clear channel One-touch sync links transmitter to receiver via infrared beam B60 Bodypack Transmitter: 64 MHz wide spectrum transmitter Durable metal housing 14 hour run time on AA batteries