Note: this item comes with US plug, please confirm the voltage of your area before purchasing. Are you looking for a professional, yet affordable wireless microphone? Are you in search of a sturdy, trustworthy tool that can do multiple jobs at once? If yes, look no further Our professional wireless microphone must meet you needs. It is one of the best choices for you. Features - Color: Black. - Material: Metal. - Size: 15 x 3 x 3 cm. Carrier frequency: 200-300MHz Frequency stability: lt; plusmn; 30ppm Dynamic range: 90dB Harmonic distortion: lt;1% Frequency response: 40Hz 18KHz plusmn; 3dB o output: Independent: 0 plusmn; 400mV Hybrid: 0 plusmn; 200mV Temperature range: -10 TO 50Power supply voltage: 110-220V Power consumption: 1 W Signal-to-noise ratio: 80dB Artifact interference ratio: 70dB Adjacent channel interference ratio: 70dB - Less noise and large dynamic range. Equipped with great function to effectively reducing howling. - Unique noise squelch function, reject external interference and turn on the local sound system. - The selection of excellent chips and high-quality components makes the sound quality of this machine extremely excellent. - A comprehensive solution to the use of KTV out of frequency, mixed frequency, sound-off, not enough distance, sound not into the microphone, singing is not smooth, battery is not durable,etc problems - Professional wireless system with 2 microphones. for professional use at any events: Karaoke, sound source recording and amplifying, vocal concerts, live-performances, conference, musical and opera, church, school, hall, family, party, etc