Pyle-Pro PDWM7300 Rack Mount Professional 4 Mic Wireless UHF Microphone System With 2 Lavalier and 2 Handheld Microphone Receiver rack mountable uhf system is perfect for large events - sensitivity: &lt;2uv (12db SINAD) - system distortion: &lt;1% - set includes 2 color coded hand microphones and 2 lavaliere belt-clip mics - RF output power: &lt;40mw Foldable antennas - Dynamic Range: &gt;80dB - Audio Output Level: 700mV(600O) - On/off switch for simple operation - RF Rejection: &gt;40dB Independent volume control for each microphone - Signal-to-Noise: &gt;80 dB - Power supply: DC15V~17V/800MA - Ergonomic design fits the hand perfectly - Current Consumption: &lt;100mA Receiver Rack mountable UHF system is perfect for large Events - Sensitivity: 2UV (12dB SINAD) - System Distortion: 1% - Foldable antennas - Dynamic Range: &gt;80dB - Audio Output Level: 700mV(600O) - On/off switch for simple operation - RF Rejection: &gt;40dB Independent volume control for each microphone - Signal-to-Noise: 80 dB - Power supply: DC15V~17V/800MA LCD display shows frequency of each microphone - Image Rejection: 70dB - Current Consumption: 400mA - Maximum Deviation Range: 55 KHz (Max) - Op Frequency Range: 480-560Mhz - Audio Frequency Response: 80-12500HZ - Microphones - Frequency Stability: 0.005% - Battery: 1.5V*2 AA Receiver Rack mountable UHF system is perfect for large Events - Sensitivity: 2UV (12dB SINAD), Operate Range: 160 - 260 ft. Independent volume control for each microphone - Signal-to-Noise: 80 dB - Power supply: DC15V~17V/800MA LCD display shows frequency of each microphone - Image Rejection: 70dB - Current Consumption: 400mA System Distortion: 1% - Set includes 2 color coded hand microphones and 2 Lavaliere belt-clip mics - RF Output Power: &lt;40mW Maximum Deviation Range: 55 KHz (Max) - Operate Range: 160 - 260 ft. Ergonomic design fits the hand perfectly - Current Consumption: 100mA Set includes 2 color coded hand microphones and 2 Lavaliere belt-clip mics - RF Output Power: 40mW