Non-diversity receiver with adjustable balanced jack outputs. HDAP (High Definition Audio Performance) technology. Up to 30 hours of autonomy with 1 AA battery. LED for status control on the transmitter. Battery status indicator on the transmitter. On/Off/Mute switch on transmitter. 3 status LEDs on the receiver. Frequency range: ISM 2 864.375MHz and ISM 3 864.850 MHz.