The IRB-10c battery-powered body-pack provides hands-free mobility and features a unique clip-on emitter that attaches to the speaker's clothing or can be neck-worn with the supplied lanyard. Frequency selection is accomplished using a small hidden switch. The top-mounted ON/OFF switch powers the body-pack and activates the Power LED. A metal belt-clip keeps the IRB-10 firmly in place. There is an microphone built into the emitter and the batteries can be charged while in the unit.