With the Stage 55 Wireless System you get incredible reception, crystal clear sound in a VHF system priced to bring the freedom of wireless to everyone. It's perfect for presentation with our LM10 lav mic. The SR55 receiver makes true diversity wireless technology available to everyone. This "diversity" design houses two antennas and a receiver circuit in a single chassis. The advanced circuit design continuously scans RF signals from the two antennas and determines which one has the clearest and strongest reception, automatically (and silently) switching that signal to the receiver. The SR55 features variable squelch, six-segment LED RF level and audio level metering, dual front mounted antennas and XLR and 1/4" outputs. The ST5 beltpack features a LM10 lavalier mic and cable to plug in an clip-on. It operates flawlessly for 10 hours with one 9-Volt battery. Includes battery level meter.