The Concert 99 Presentation is a UHF wireless system comprising a CR99 receiver, CB99 beltpack transmitter, and LM10 lavalier microphone. It provides 80 operating channels across 24 MHz, true RF diversity, IR Sync, and Group Scan for reliable frequency selection. With a 300-foot line-of-sight range, backlit LCD display, and balanced XLR plus 1/4" outputs, it suits presenters and educators seeking dependable wireless freedom. Transmitter lasts up to eight hours on two AA cells.