Economical and practical, cost-effective. Alloy wire is not as expensive as pure gold wire, reducing the cost of use. Ideal for small projects and beginners. More choices for customers. 100PSC WS2812B ECO Black PCB LED Chip: The WS2812B ECO RGB Alloy Wires full color smart pixel is individually addressable. It has 256 brightness displays and a 24-bit (16,777,216) color display. You can set any color or animation. Easy to use: It is placed on a small PCB board that allows you to solder it in any configuration you want. You only need one digital pin plus 5V and ground to control as many LEDs. The chainable design means no crossed wires. Save your money. It works almost like NeoPixel but much cheaper than NeoPixel. It is robust, beautiful and very comparable to other similar products. Wide Compatibility: Works very well with Adafruit NeoPixel library, ready-made library and example code for Arduino UNO / Duemilanove / Diecimila, Flora / Micro / Leonardo, Trinket / Gemma, Arduino Due and