Pyle-Pro PDWM2550 19'' Rack Mount Dual VHF Wireless Rechargeable Handheld Microphone System Professional vhf 2 channel wireless system - 2 handheld microphones included - dual telescoping receiver antennas - dual volume controls with digital readout - dual charging system - 1/4'' individual line outputs & mixed 1/4'' outputs On/Off Broadcasting Switch - Carrier Frequency: 210-270Mhz - Dynamic Range: 100dB Frequency Response: 40Hz~18 kHz - Operation Range: 50-180 Meters Professional VHF 2 Channel Wireless System - 2 Handheld Microphones Included - Dual Telescoping Receiver Antennas Dual Volume Controls with Digital Readout - Dual Charging System - 1/4" Individual line outputs & Mixed 1/4" Outputs Frequency Response: 40Hz~18 kHz - Operation Range: 50-180 Meters Signal to Noise Ratio: 105dB - Receiver Power Supply: AC 110/240V - Microphone Power Source: 8.4 Volt Rechargeable On/Off Broadcasting Switch - Carrier Frequency: 210-270Mhz - Dynamic Range: 100dB Receiver Dimensions:1.8" X 18.9" X 1.3" - Microphone Dimensions: 9.6" X .7" X 0.5"