Check the listing for details. WS2812B Led Pixel Ring 5050 RGB WS2812 With SP110E Bluetooth Controller DC5V USB. Condition: New. Listed at 4.20 USD. WS2812 Led Pixel Ring lndividul AddressabIe Ring 5050 RGB WS2812 IC BuiIt-in Led ModuIe With USB/DC Wire And SP110E Controller Note: 1.IF you choose LED Ring Kit,include Led Ring,sp110e controller and USB Wire. 2.If you choose only SP110E,not include LED Ring and USB Wire 3.The maximum current of the USB Wire is 5V 2A. If you connect multiple led ring, but controller cannot control it. It may be due to insufficient current and not a controller problem. WS2812 Pixel Ring Specification: Voltage: DC 5V LED source: WS2812B 5050 Light color: RGB LED quantity: 8/16/24/35/45led Board color: black, white Application:With Gorgeous color, this module can be used to decorate dress or or the holiday decoration SP110E Bluetooth Led Controller Control Method: APP-Bluetooth Input Voltage: DC 5-24V Pixel: 1024 Connector: 3Pin Control Distance: 20m Product weight : 20g ; Product size : 85mm*45mm*22mm; Support IC: WS2811 WS2812B WS2813 WS2801 SK6812 SM16703 TM1804 UCS1903 LPD8806 APA102 APA105 DMX512 TM1914 TM1913 P9813 INK1003 P943S P9411 P9413 TX1812 TX1813 GS8206 GS8208 SK9822 TM1814 SK6812-RGBW P9414 P9412 Size: Outer Diameter;Inner Diameter;PCB Width 8LED 27mm;12mm;7.5m 16LED 48mm;31.1mm;7.5mm 24LED 72mm;54mm;9mm 35LED 96mm;78mm;9mm 45LED 120mm;102mm;9mm