The codeBit levels up your littleBits circuits by allowing you to program how your Bits work. Using the littleBits Code Kit app you can command this Bit to create unique sounds, movements, and animations. The codeBit dongle allows you to wirelessly upload code from your computer to your codeBit. The USB cable brings power to your USB power Bit and rechargeable battery. It will also send information between certain Bits and your computer.