The world's most popular development board has been shrinkified. Everything about this Arduino UNO is one-of-a-kind. Finishing in black and gold, as well as stylish design and packaging, are all of the greatest quality. A tiny gem to honor the Arduino community and all that we've accomplished together over the years. Each item is unique and numbered on the PCB, and includes a hand-signed letter from the founders. It's a limited edition, so grab it while you can!