BNK Bk701 Microphone

Wireless Frequency Range: VHF 210-290 MHz Transistor Modulation Mode: FM; Squelch Control: Noise Lock Frequency Deviation: +/-18kHz; Frequency Stability: +/- 5khz Frequency Response: 50Hz-17kHz Dynamic Range: > 90dB; F/N Ratio: > 90dB Receiving Power: 220V/50Hz; S/N Ratio: 70 dB Total Harmonic Distortion: -85dB Distance range:50+ meters