The Gemini FB-64 is a UHF 64 channel belt pack transmitter for use with the Gemini UF series receivers. The FB-64 offers a mic/line input sensitivity switch and a rechargeable battery input. It is compatible with Geminis LAV-X3 lapel mic or the Gemini HSM-X3 headset mic with mini XLR plug. The transmitter cannot function by itself and requires at least one receiver.