Description This product is a portable audio mixer. It is made of solid materials. It is safe and durable. It can serve you for a long time without being easily damaged. It is an excellent portable audio mixer that can bring you convenience, allowing you to have a more comfortable experience. Features -Color:Black-Material:PCB, acrylic, copper, electronic components-Size:8.35X5.40X2.10cm/3.28X2.12X0.83inVoice data: 24dBi- Small and delicate passive circuit design will not increaseor reduce the audio signal.- Work without battery or external power supply, easy to carry and use anytime, anywhere.- Single main output volume knob and 4 independent input volume knobs, the 4 inputs do not interfere with each other.- Provides the highest sound quality even at the maximum output level.- Exquisite workmanship, reasonable structure, professional and practical, can bring you convenience.Packing list: 1 x audio mixer