Arduino Micro Details
The Arduino Micro packs all of the power of the Arduino Leonardo in a 48mm x 18mm module (1.9" x 0.7").
It makes it easier for makers to embed the Arduino technology inside their projects by providing a small and convenient module that can be either used on a breadboard or soldered to a custom designed PCB.
The Micro has been developed in collaboration with Adafruit Industries, one of the leaders of the Maker movement. Adafruit is already developing a series of accessories for the new board that will complement its power and simplicity.