BBC micro:bit Starter Pack. The Starter Pack consists of a BBC microbit, a 1M anti tangle USB Cable, a battery cage, and 2 AAA batteries. It contains everything you need to connect your BBC micro:bit to your computer and also enables you to power your BBC micro:bit once you disconnect it from the USB.
Based around a 32 bit ARM Cortex-M0 processor, the BBC micro:bit also features on board accelerometer and compass sensors, Bluetooth Low Energy and USB connectivity, a display consisting of 25 LEDs, two programmable buttons and it can be powered by either USB or an external battery pack. The device inputs and outputs are through five ring connectors that are part of the 21-pin edge connector.