The Gemini ZB-128T UHF rechargeable belt pack transmitter is for use with the Gemini UZ series receivers. The ZB-128 has a mic/lin input switch and has a mini XLR input plug. The ZB-128T body pack may be used with either the Gemini HSM-X4 headset mic or with the Gemini LAV-X4 electret condenser mic.