Microphone Specification: Frequency range: 500MHz to 599MHzModulation mode: Digital modulation PSKAudio sampling rate:48KHzChannel spacing:>300KHzAudio signal to noise ratio:>96dBFrequency response: 30Hz--20kHzOscillation mode: Vco oscillation inside the chipReceiver Specifications:Rf Bandwidth: 60MHFrequency Points: 2*50 Signal-to-noise Ratio: >105dBReceiving Sensitivity: 10-20dBuVFrequency Response: 80Hz-18KHzDistortion: <0.5%Dynamic Range: 96dBReceive Delay: 2.5 msBattery type: LithiumAntenna: Bnc/50OSensitivity:-96dBmHarmonic interference ratio:>80dBFalse interference ratio:>70dBPackage Includes:2x Wireless Microphones3x Aa Microphone Batteries1x 6.35 mm(1/4'') to 3.5 mm(1/8'') adapter2x Anti Slip Ring2x Mic windscreen2x Usb Charging Cord1x User Manual