Shure BLX24/PG58 T11 , UHF Wireless System with PG58 Handheld Transmitter, PG Vocal series, Up to 3 systems simultaneously, Pilot tone, Microprocessor-controlled antenna diversity, Quick-Scan function for free frequency detection, Dynamic PG58 microphone capsule, Microphone Frequency range: 60 - 15,000 Hz, Polar pattern: Cardioid, Plastic receiver, Integrated antennae, XLR and jack outputs, Audio status LEDs, Transmitter frequency range: T11 (863 - 865 MHz)