Features: Wireless microphone system with 2 handheld mics and 1 receiver, suitable for home karaoke, business meeting, public speech, classroom teaching, etc. UHF band frequency and 2 antennas design ensures stable and clear signal transmission, providing you with excellent sound quality. Adopts AF & RF automatic synchronizing technology for quick and easy connection of microphone and receiver. The receiver with LCD display for showing the frequency information and 2 control knobs for adjusting the volume of the microphones separately. With two XLR balanced and one 6.35mm audio mix unbalanced output interfaces for connecting speakers. Specifications: --System Modulation: Broadband FM Channel Spacing: 250KHz Frequency Stability: 0.005% Dynamic Range: 100dB The Peak Frequency Deviation: 45KHz Frequency Responses: 80Hz-18KHz( 3dB) S/ N Ratio: > 105 dB T.H.D. (Overall):