Check the listing for details. Thinary Electronic RGB LED Ring 8Bit WS2812 5050 RGB mini led lamp module. Condition: New. Listed at 6.23 USD. Description: There is a single data line with a very timing-specific protocol. Since the protocol is very sensitive to timing, it requires a real-time microconroller such as an AVR, A rduino, PIC, mbed, etc. It cannot be used with a Linux-based microcomputer or interpreted microcontroller such as the netduino or Basic Stamp. Features: Outer Diameter: 32mm (radius)Inner Diameter: 17.5mm (radius)Chip: WS2812 (built-in LED)LED:8pcs 5050 RGB full color highlightingVoltage: 5VPorts: DigitalPlatform: Arduino microcontroller Applications: Full-color module, Full color soft lights a lamp strip. LED decorative lighting, Indoor/outdoor LED video irregular screen. Package Included: 1 x Ring Wall Clock 8 Super Bright WS2812 5050 RGB LED Lamp Panel