FEATURES UHF 740-790MHz frequency range True Diversity for maximum range and dropout protection PLL Synthesized, pre-set 100 selectable frequencies IR sync downloading the frequency from receiver LCD display shows the RF level, AF level, channel and frequency Patented design, rubber cover protect the wind instrument EIA standard 1/2U rack-mountable metal chassis Up to 300 feet (100m) line-of-sight operating range Designed for saxophone, trumpet, trombone, tubar, horn 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: >108dB Power Supply: DC12V-18V / 500mA Audio Output: 1*XLR socket, 1*6.35mm jack socket Transmitter Frequency Range: 600-952MHz RF Power: 10mW Microphone Type: Condenser Directivity:Cardioid Deviation: 48KHz Antenna: 1/4 wave Length wire type Battery Voltage: 1.5V (1x1.5V AA Battery) Power Consumption: 10 hours, battery-dependent