Shure BLX14/CVL Q25, UHF Wireless System, PG Presenter series, BLX1 pocket transmitter, CVL lavalier microphone, Up to 12 systems simultaneously, Pilot tone, Microprocessor-controlled antenna diversity, Quick-scan function for free frequency detection, Condenser CVL microphone capsule, 50 - 20,000 Hz, cardioid, plastic receiver, Integrated antennae, XLR and jack outputs, Audio status LEDs, Frequency range: Q25 (742-766 MHz)