Microphone wireless transmission system, so that wired second wireless, 0V/5V/48V free switching. More convenient and portable, wired microphone becomes wireless: microphone wireless transmission system consists of transmitter and receiver. Three modes meet the requirements, with built-in 0V/5V/48V mode switching. battery life and large capacity: it can be powered by USB data, and can be used for about 7 hours at a time. 48KHz sampling rate, high-fidelity restoration of timbre, accurate restoration of every detail of sound, enjoy beautiful music. Color:As Shown Material:Metal Package Contents: 1 * Transmitter 1 * Receiver Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.