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 different color and appearance of accessories, don't accept the specified.but the functions are the same and will not affect the use,)