The 711 is a standard 130-size DC Hobby Motor, comes with a wider operating range than most toy motors from 4.5 to 9VDC instead of 1.5 to 4.5V. This range makes them perfect for controlling with an Adafruit motor shield or with an Arduino where you are more likely to have 5 or 9V available than a high current 3V setting. It will fit in most electronics that already have 130-size motors installed and there's two breadboard-friendly wires soldered on already for fast prototyping.
