There are two major components of a cochlear implant – an internally implanted component, and an external sound processor.

The internal surgically implanted part consist of a electronics package, an active array of electrodes that stimulate your auditory nerve fibers, and an receiving coil that sits under your skin.

The external component consists of the processor, battery pack, and the transmitter that is connected over the skin to the implanted device’s receiving coil via a magnet.