UHF-6400 Receiver/Transmitter Set and Choice of Wireless Mic: Body pack transmitter (WB-6400) and Headband mic (HBM-60) or Collar mic (CM-60) or Lapel mic (LM-60). Features - 64 Channels: Locate clear channel in your area Use mulitple wireless units at once, WR-6400: Outboard wireless receiver w/ 64 userselectable channels, WB-6400: Bodypack & choice of lapel, headband or collar mic, True Diversity: Selects the best signal from two independent receivers, Rackmount Kit: Single and Dual Rackmount included, Digital Display: Easy to read in L.E.D. display, PLL Synthesized: Lock on channel for reliable performance, Squelch Control: Varies RF reception strength, Output Included: Balanced and unbalanced aux-level output from a 1/4inch and XLR jack to the sound systems, mixer or amplification aux-level input