1. Built-in wireless bluetooth, you can the switch to switch to bluetooth mode, and then connect to mobile devices to enjoy high-quality music anytime, anywhere. (Compatible with a variety of mobile phones, computers and other devices). 2. It can be used in professional recording studios, stage performances, event hosts, meeting places, broadcasting rooms, etc. 3. MIC-4H mixer, built-in 99 kinds of high-quality digitaleffect processors, can add various reverberation effectsyou need, allowing you to easily record excellent soundquality and stable sound effects. It is the forsinging and recording. 4. The volume and frequency distribution between various signals can be adjusted to make the sound clearer. When adjusting the two effect knobs, you can quickly obtain a reverb effect to meet your live needs. Due to different batches, there may be differences in product appearance and printed text, which not affect use. Plug Type:EU Plug,it applies to Indonesia, Germany, France, Spain, Italy and so on. Voltage:AC100-240V Colour:As Shown Material:Metal Package Contents: 1 * Mixer 1 * Adapter 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.