Pyle-Pro PDWM2800 Professional UHF Wireless Microphone System With 2 Microphones Rack mountable uhf system is perfect for large events - sensitivity: &lt;2uv (12db SINAD) - system distortion:&lt;1% - on/off switch for simple operation - RF output power: &lt;40mw Foldable antennas - Dynamic Range: &gt;80dB - Audio Output Level: 700mV(600O) - Ergonomic design fits the hand perfectly - RF Rejection: &gt;40dB Independent volume control for each microphone - Signal-to-Noise:&gt;80 dB - Power supply: DC12V~17V/600MA - Color-coded mics for easy identification - Current Consumption: &lt;100mA Rack mountable UHF system is perfect for large Events - Sensitivity: &lt;2UV (12dB SINAD) Foldable antennas - Dynamic Range: &gt;80dB - Audio Output Level: 700mV(600O) - Ergonomic design fits the hand perfectly - RF Rejection:40dB Independent volume control for each microphone - Signal-to-Noise:80 dB - Power supply: DC12V~17V/600MA LCD display shows frequency of each microphone - Image Rejection:&gt;60dB - Current Consumption:400mA Frequency Range: 470-608MHz - Audio Frequency Response: 80-12500HZ - Microphone - Frequency Stability: 0.005% - Battery: 1.5V*2 AA System Distortion: 1 % - On/off switch for simple operation - RF Output Power: 40mW