The Arduino Pro Mini is intended for semi-permanent installation in objects or exhibitions. It has the same microcontroller as the Arduino UNO (ATmega328). The board comes without pre-mounted headers, allowing the use of various types of connectors or direct soldering of wires. 

Arduino PRO mini has 14 digital input/output pins (of which 6 can be used as PWM outputs), 6 analog inputs, an on-board resonator, a reset button, and holes for mounting pin headers. A six pin header can be connected to an FTDI cable or breakout board to provide USB power and communication to the board.