The Concert 88x Headset System is a professional UHF wireless microphone system comprising the HS5 headset microphone, CB88 beltpack transmitter, and CR88x receiver. It offers 100 operating channels across a 25 MHz bandwidth with automatic channel scanning and infrared link to lock transmitter and receiver to the same channel. The system features true-diversity reception, up to 300 ft line-of-sight range, and both balanced XLR and unbalanced 1/4-inch outputs, with a rackmount kit included.