Pyle Pro Pdwm2100 Professional Dual Vhf Wireless Handheld Microphone System Specification: Professional VHF 2 Channel Wireless System Dual Handheld Microphones Included Dual Telescoping Receiver Antennas Rotary Volume Controls with Digital Readout On/Off Broadcasting Switch Mixed 1/4' Outputs Dynamic Range: 80dB Total Harmonic Distortion: 0.5% Operation Range: 50-150 Meters Signal to Noise Ratio: 80dB Receiver Power Supply: AC 110V Microphone Power Source: 9 Volt Receiver Dimensions: 1.0' x 7.9' x 11.4' Microphone Dimensions: 9.6' x 1.9' x 1.3' Sold as: Unit Frequency Response: 60Hz~12KHz Weight: 2.49 lbs.