Description: Wide Use: Great for conferences, broadcasting, weddings, social events and any small to medium-sized venues including meeting rooms, auditoriums, schools, churches and stages. Professional: Wireless microphone system delivers premium sound feeling and professional features. Noise Cancelling: It is implemented with noise-cancelling for element to guarantee outstanding clarity by filtering out unwanted background noise. Portable: The wireless microphone system allows fast setup and easy portability. Stable Signal: The singing machine can offer strong and stable wireless signal, so you do not worry about the sound will be broken off during use. Specification: Material: plastic, metal. Size: Approx. 10x8x1.9cm/3.94x3.15x0.75inch. Color: show as pictures. Frequency: 230MHz-270MHz. Microphone core sensitivity: -76±3DB. Transmit power: 16DBm. Effective distance: ＞20M. Receiver sensitivity: -105DB. Frequency response: 50HZ-17KHZ. Signal to noise ratio: ＞100dBV. Distortion: ＜0.5%. Note: There might be a few color distortions due to different computer resolutions. There might be a slight error due to different hand measurements. Package Includes: 1 Piece Main Unit. 2 Pieces Wireless Microphones. 1 Piece USB Cable. 1 Piece for Micro USB cable. 1 Piece Large USB cable. 1 Piece Male to male Audio Cable. 1 Piece 3.5mm to 2RCA Audio Cable. 1 Piece User Manual.