Micro không dây cầm tay Vicboss P-200H : 1CHWIRELESS MICROPHONE SYSTEMFrequency Preparation: Crystal Type (Singular Frequency)Carrier Frequency Range: 217.250~225.000MhzSensitivity: -105dB [S/N : 12dB]Frequency Stability: ± 0.002%T.H.D: Audio Dynamic ...