Fangrui Product Details 1. Music Audio Display Production. 2. Led Vehicle Volume Level Indicator. 3. Fun Electronic Diy Kit Controlled By Voice. 4. Usb Voice Control Audio Spectrum Light Kit. 5. The Use Of A Separate Comparator Circuit Is Slightly More Complex, But Can Be Accurate Display. With Anti-reverse Connection Protection Diode, Effectively Prevent Power Polarity Connection To Burn Circuit, More Suitable For Diy. High Brightness: All Huge Highlighting Led, Driven By Comparator Circuit, Better Spectrum Effect, No Virtual Bright Clear Brightness High Brightness. For Sound Sensitivity, Adjustable With Adjustable Type: A:flash From Bottom To Top Voltage: Dc 5-12v Own Microphone, No Audio Cable Power Supply: 5v(powered By Usb Interface) Recommended Micro-usb 5v Android Power Supply, Universal Phone Charger Usb, Computer Usb Power Supply Note: This Is A Diy Kit And You Need To Assemble It Yourself. Color: Green Material: Pcb+components Package Contents: 1 X Circuit Board 1 Set X Accessories (different Batches May Cause Diff