109 ultra-bright 5050 high-brightness LEDs are arranged on a 5.2inch circular PCB. There are seven rings in total, each ring works independently Each WS2812 is addressable. The built-in shaping circuit of the chip does not accumulate signal distortion and can display stably. There are pads on the back for connecting wires or breadboard pins and two mounting holes for securing the board to many different surfaces Widely compatibility: simple wiring and easy to control, some full-color led lights can be output after quick soldering, compatible with Arduino, Raspberry Pi, Teensy, T1000S, K1000C and other programmable controllers. Application: It can be widely used to make led screen, led wall, outdoor billboard, and also be used for decorative lights