iCufflinks by Adafruit - Getting Started

Sophisticated. Modern. Open Source. Gorgeously machined aluminum with a subtle pulsating LED.
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Proudly made in North America (Canada and USA). With these, you are, most definitely, from the future. For those special occasions when you need to be dressed to iMpress:
Weddings, Tech events, Sci-Fi/Comic-Cons, IPOs and VC funding opportunities.
CNC machined from the finest 6 series aluminum for durability and beauty. The iCufflinks are a remarkable accessory. Machined with a "screw in backing". Each iCufflink contains a circuit board with pulsating LED and battery.
iCufflinks are completely open source. The source code, circuit board files, schematics and CAD files are posted on GitHub. Mod & Hack away!
Before your fancy event, just pop the battery in, screw the backing and your iCufflinks will gently pulsate for up to 24 hours.
The "pulsing" is similar to the "breathing" LED pattern on many laptop and computer systems. The default pattern is reverse engineered from the Apple "breathing" LED on Macs, MacBooks, iMacs, etc.