Wireless microphone UHF one drag two wireless microphone home karaoke speech teaching tie clip microphone|Microphones Trademarks: 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 problems Mute control: Lock noise Deviation: plus or minus 11 KHZ Frequency response: 80HZ-15KHz Frequency stability: ±0.005% Signal to noise ratio: >60dB Distortion: 0.5% (1kHz) Channel number: two channels Sensitivity: -70dB M Use distance:80m in open area Receiver power supply: DC 12V/320mA Emitter power: 9V cascade battery or No. 5 battery Transmission power: 20mW Frequency range: 200mhZ-270mhz Output mode: independent and mixed automatic selection Transmitter: Frequency stability: ±0.005% Carrier output power: ?30mW Stray radiation suppression: >40dB Modulation: VHF Maximum major: ±75KHz Pickup mode :(moving coil type)(lwm-6188 /C/D)(capacitive type)(lwm-6188 /C) Preweighted: 50 S Power supply: 9V Batt Power consumption: 40dB To weigh: 50 S Audio output impedance: 600 ? Audio output level: 0-0.5V Power supply: AC220-240V 50/60Hz Power consumption: 1W