Wireless microphone UHF one drag two wireless microphone home karaoke speech teaching tie clip microphone|MicrophonesTrademarks: A-AMI and Sqikezy random ,,,Product features: L High fidelity, moving coil dynamic, to reproduce the true voice L The use of international famous compression expander, to create a thoughtful sound L digital pilot, with stronger anti-interference ability L a comprehensive solution to the KTV use of frequency, frequency, break, distance is not enough, the sound on the microphone, singing not easy, battery is not durable and other problemsMute control: Lock noiseDeviation: plus or minus 11 KHZFrequency response: 80HZ-15KHzFrequency stability: 0.005%Signal to noise ratio: >60dBDistortion: 0.5% (1kHz)Channel number: two channelsSensitivity: -70dB MUse distance:80m in open areaReceiver power supply: DC 12V/320mAEmitter power: 9V cascade battery or No. 5 batteryTransmission power: 20mWFrequency range: 200mhZ-270mhzOutput mode: independent and mixed automatic selectionTransmitter:Frequency stability: 0.005%Carrier output power: 30mWStray radiation suppression: >40dBModulation: VHFMaximum major: 75KHzPickup mode :(moving coil type)(lwm-6188 /C/D)(capacitive type)(lwm-6188 /C)Preweighted: 50 SPower supply: 9V BattPower consumption: 40dBTo weigh: 50 So output impedance: 600 o output level: 0-0.5VPower supply: AC220-240V 50/60HzPower consumption: 1Wnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnull