Audio-Technica's ATR7000 Series Wireless Systems are compact, portable, versatile systems designed to provide reliable performance, easy setup and clear, natural sound quality. The ATR7000 Series Wireless Systems are single-channel, fixed-frequency systems. The ATW-R7000 is a non-diversity, single-channel receiver with a quarter-wave telescoping antenna for extended operating range of up to 300 feet. The ATW-R7000 also offers volume control along with Power, RF and AF Peak indicator lights. It can be placed horizontally or vertically with included vertical mount. Product Type: Wireless microphone system Radio Frequency Range: 170.245MHz Microphone Operation Mode: Mono Product Type: Wireless microphone system Form Factor: Headset microphone Microphone Operation Mode: Mono Connectivity Technology: Wireless - radio Frequency Response: 80 - 13000 Hz Total Harmonic Distortion (THD): 1% Dynamic Range: 90 dB Radio Frequency Range: 170.245MHz Radio Channel Qty: 1 Modulation Type: FM Transmission Range: 197 ft Included Accessories: Wireless microphone receiver, bodypack transmitter