Description: Designed to add flashy functionality to your project without taking up a lot of room, has an tiny microcontroller on it, pretty smart Simply sew on 4 LEDs and connect a battery, the LEDs will each blink or fade differently One will blink on and off, another one will flash a heartbeat pattern; one will do a “breathing ” fade, and another one will do a random fade Quick and easy to add twinkling lights to a project without any programming or a bulky main board It's also a great educational tool for showing a range of functionality without having to get out the computers Specification: Size: Approx. 20.1 x 3.44mm Package Includes: 1 Piece E-Textiles Wearable Electronics