Duemilanove 2009 AVRmega328P-PU with USB Cable for Arduino (Works with Official Arduino Boards)
Microcontroller: AVRmega328P-PU - Operating Voltage: 5V - Input Voltage: 7~12V - Digital I/O Pins: 14 (6 PWM output) - Analog signal input pins: 6 - Flash memory: Total 16KB (2KB for bootloader) - SRAM: 1KB - EEPROM: 512 bytes - Clock Speed: 16MHz - Comes with USB cable (40cm)