CB88 Beltpack Transmitter (Band D / Band K) for Concert 88x systems delivers a compact, belt-worn wireless mic solution. It provides adjustable input gain (38 dB max), a silent mute switch, and a power/mute status indicator. The unit secures with a metal belt clip and runs on two AA cells for up to eight hours. Input is Mini-XLR (P3) with 1 MΩ impedance; RF power is 10 mW EIRP. Dimensions: 96 × 62 × 18.5 mm; weight 93 g.