1. Material: metal body 2. Manually switch HDMI pass-through mode/2.0 stereo channel mode/5.1 channel mode 3. DC5V power supply design, stronger compatibility 4. Good shielding effect and strong anti-interference performance 5. Corrosion resistance, strong heat dissipation 6. Support 4Kx2K high-definition resolution, and display the details of the picture clearly 7. External function of optical fiber interface 8. Dimensions: 85x61x21mm