FEATURES UHF740-790frequency range( region dependant) True diveristy for maximum range and dropout portection, 100 meters line of sight range. Super anti-interference capability ensures 10 systems can use together without interference High-fidelity sound quality, no loss while wireless transmission compare to the cable. Pre-set 100 (10*10) frequency seletable, IR synchronization. LCD display shows the group, channel, frequency and RF, AF levels. EIA standard 1/2 rack mountable metal chassis. No more the bodypack transmitters, plug-in transmitter design. Transmitter power supplied by one AA 1.5V battery, battery life more than 12hours Special designed for electric guitar, bass, keyborad, drums violin and all 6.35mm jack electric instrument applications SPECIFICATION Comprehensive Performance Frequency Range: 600-952MHz Modulation Mode: FM Dynamic Range: >100dB Frequency Response: 40Hz-17KHz3dB Total Harmonic Distortion: <0.5% at 1KHz Signal/Noise Ratio: ?108dB Receiver Frequency Range: 600-952MHz Receive Sensitivity: -110dBm (sinad ?30dB) Signal/Noise Ratio: >105dB Power Supply: DC12V / 500mA Audio Output: 1*XLR socket, 1*6.35mm jack socket Transmitter Frequency Range: 600-952MHz RF Power: 10mW Frequency Deviation: 48KHz Antenna: 1/4 wave Length wire type Battery Voltage: 1.5V (1x1.5V AA Battery) Power Consumption: 10 hours, battery-dependent