FEATURES: PLL Synthesized, pre-set 100 selectable frequencies Antenna diveristy guarantee maximum range up to 80 meters Pre-set 100 (10*10) frequency seletable. IR synch downloading the frequency from receiver LCD display shows the RF level, AF level, channel and frequency Patented design, rubber cover protect the instrument Reciver powered by 2*1.5AA battery or 9V adaptor Designed for accordion wireless audio transmission SPECIFICATION: Comprehensive Performance Modulation Mode: FM Dynamic Range: >100dB Frequency Response: 60Hz-17KHz±3dB Total Harmonic Distortion: 105dB Power Supply: DC9V/ 500mA Audio Output: 1*6.35mm jack socket TRANSMITTER: Element: Condenser Polar pattern: Unidirectional Cartridge size: Φ 6.0 * 2.7 mm Sensitivity: - 47 db + 2 dB Frequency response: 275-15 KHZ Output impedance: ≤680 Ω Working voltage: Phantom 48V or DC 2V- 10V Signal-to-noise ratio: more than 58dB cable length: 1m Standard Package: 1 * Receiver 1 * Microphone 1 * Transmitter 1 * Audio Cable 1 * Power Adapter 1 * User Manual 1 * Box