Mode: Frequency Modulated Carrier Frequency: UHF790-850MHz Audio Frequency Response:40Hz-15kHz±dB THD:<1.0% S/N Ratio:>85dB Working Range:>80m TRANSMITTER Max.Transmission power: 9mW Max.Modulate Range: ±25kHz Channel:16 CHANNELS Battery: 3V(1.5V AAx2) continuos Working Time: Up to 4 hours Max.Transmission power: 9mW Max.Modulate Range: ±25kHz Battery: 3V(1.5V AAx2) continuos Working Time: Up to 4 hours RECEIVER Power Supply: DC 12V/800mA Power Consumption: 9W Receiving Sensitivity: 22dBu Dimensions: 380x185x43mm