Features:- UHF wireless microphone special frequency band design, not subject to interference from other industrial frequencies- Use distance, open area can reach more than 150 feet- Adopt excellent audio pressure expansion integrated circuit and high quality single point microphone core, sound quality is excellent and not loud- The transmitter USES two 1.5v batteries for power supply. The battery has a long service time and easy maintenance and replacement- Advanced voice code modulation locking function, can better avoid interference and eliminate switching machine impact noise- Mixed (6.35mm) and caron separate output, easy to connect the mixer, power amplifier equipment- The receiver adopts quartz frequency multiplier fixed frequency, which is more simple and convenient to use- Hand microphoneSound quality clear without distortion, has a good function of noise prevention.Environmentally friendly and durable, good hand feel. Specification:1.Frequency deviation: ±48kHz2.Frequency response: 60Hz-16kHz3.Frequency stability: ± 0.005%4.SNR: > 95dB A+5.Distortion: < 0.5%(at 1kHz)6.Channel: two channels7.Sensitivity: -90dBm8.Distance: effective distance 150 feet (without obstacles)9.Frequency range: 500-599MHZ10.Frequency stability: + + 0.005%11.Modulation mode :FM12.S/N Ratio: > 103 db13.T.H.D: > 0.8%14.Distance :20 m -80 m15.Temperature range :-10 ℃ -70 ℃ - Receiver1.Carrier Frequency Range: UHF 610-865MHZ2.Oscillation Mode: Quartz Controlled Fixed Frequency3.Stability: 10 PPM4.Sensitivity: 2uV @ sinad=12 dB5.Max Deviation Range: 50KHz6.S/N Ratio: >105dB7.T.H. D:<0.5%@1KHz8.Image rejection: 85 dB typical9.Squrious reiection: 75 dB typical10.Frequency Response: 60Hz-16KHz11.Squelch Control: dual-squelch circuit12.Max. Output Level: Balanced: 0-400m, Unbalanced: 0- 300my13.Power Supply: External DC Power Supply, 0.4A, 12-15VDC - Transmitter1.Transmission frequency: < 30 m W (depending on the applicable country range)2.Harmonic power: < 35d B (main wave)3.2.Squrious emission: <40dB(with carrier)4.Battery voltage: AA 1.5V*2 Package Included1 x UHF Receiver2 x Hand-held Microphones2 x Microphone Protective sleeve1 x Audio Cable1 x Power Adapter(we will also send you an adapter according to your country)1 x User Manual