Wireless conference microphone Takstar MS-208W Characteristics: Frequency: VHF 220MGts - 270 MHz. shumapodavleniya system microphone Feature: Cardioid. Frequency range: 60 Hz to 15 kHz. The signal / noise ratio:> 80 dB. Total Harmonic Distortion: <1% (at 1 kHz). Transmitter power: <10mW. Transmitter Power Supply: 2pcs 1.5V AA batteries. It can also work on XLR with phantom power + 48V Power receiver usb: + 5V / 500mA. Operating range: 50 meters in open terrain