Support For the Arduino IDE 1.0+ (OSX/Win/Linux).
Power via USB or External Source - 5v or 7-35v (Automatic Selection).
On-board 500ma 5V Regulator.
Built-in USB (and serial debugging).
6 I/O Pins (2 are used for USB only if your program Actively Communicates Over USB, Otherwise you can use all 6 even if you are Programming via USB).
8k Flash Memory (about 6k after Bootloader).
I2C and SPI (Vis USI).
PWM on 3 Pins (more possible with Software PWM).
ADC on 4 Pins.
Power LED and Test/Status LED (on Pin0).
Size:1.8cm x 2.6cm/0.71 x 1.02 inch
Package included:1*Micro-USB Development Board Module
1 row row needle
Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.