PG2 Handheld Transmitter- Power, mute and battery status LED - Power and mute switch - 9V battery (included) provides 8 hours of battery life - 75m (250 ft.) operating range PG4 Receiver- Internal Antenna Diversity - Up to 10 selectable channels - 8 compatible systems (multiple bands vary according to country) - 1/4"" and XLR outputFEATURES:[ Frequency range: 536 - 865 Mhz[ Working Range: 75m (250 ft.) Note: actual range depends on RF signal absorption, reflection, and interference.[ Audio Channel Response: Minimum: 60 Hz., Maximum: 15 kHz (overall system channel depends on microphone element).[ Total Harmonic Distortion: 0.5%, typical[ Dynamic Range: >100 dB A-weighted, typical[ Audio output: XLR balanced and 6.3mm unbalanced[ Audio Output Level: –19 dBV (XLR), -5dbV (phono( (at 1kHz)[ HF Transmitter Output: 10 mW typical (dependent on applicable country regulations)[ Power Requirements: One 9V alkaline or rechargeable battery[ Battery Life: >8 hours (alkaline) ";