Jammin Pro TwinPro Dual buying Wireless VHF Microphone System- New

Product Name: Jammin Pro TwinPro Dual buying Wireless VHF Microphone System- New
New in original box. Opened the box to show contents. Descriptions directly from box. Features: VHF frequency band doe interference-free reception Multilevel high frequency and mid frequency narrowband filter for fully eliminating signal disturbing Low power consumption design Unique ALC circuitry buying for avoiding distortion from high volume Circuit controlled switching noise avoidance Quartz crystal oscillator circuitry for extremely stable frequency Audio companding technique for reducing the noise and increasing the dynamic range Effective feedback control circuitry Rugged and durable handheld microphone design Technical specs: Mute Control: Noise-Lock Frequency Deviation: +/- 18kHz Frequency Response: 80Hz-15kHz Frequency Stability : +/- 0.005% S/N Ratio:>70dB Total Harmonic Distortion: <0.5%(1kHz) Number of Channels: 2 channels Receiving Sensitivity: -80dBm Operating Range: 50m open area Questions, please ask.