Shure ULX P4/R4 UHF Diversity Receiver - over 1400 switchable frequencies, group and frequency scan, display (battery, group, channel and frequency), HF and audio level, volume, XLR and jack outputs, adjustable squelch, rear mounted BNC antennae, frequency range: R4 (784.000-820.000MHz), up to 40 parallel systems (on multiple frequency bands, depending on the regulations of the country). Includes rack kit. Dimensions: 9.5".