The MI:power board for the BBC micro:bit offers portability for your projects. It is designed to fit comfortably on the BBC micro:bit and features a built-in buzzer and 3V battery connector When assembled, the MI:power board plugs directly into the micro:bit’s 3V, GND and P0 connections. The 3V and GND connections provide power to the micro:bit and the built-in buzzer connects to P0, which is the default output pin when using the audio functions in the Block Editor software. The board has an easily accessible on/off switch Features: Power your BBC micro:bit from a board Get away from the computer connection and transfer your work to the mobile Move away from the computer and take your computer off the computer and onto your mobile device. Easy access on/off switch Ideal for allowing your micro:bit to become a handheld remote control and more This accessory is supplied with spacers, mounting hardware and a battery No soldering required