 Any bone conduction implant system consists of an implant and an external audio processor. A percodaneous system uses a screw that is connected to both the implant and the processor and pokes through the skin. With the transcodaneous system, the processor is held over the implant by a magnetic attraction and leaves the skin intact and healthy. Bone conduction implants can have direct or indirect drive. Direct drive means that the implant itself generates vibrations and transfers them directly to the bone. It drives the bone directly. Indirect drive means that the processor generates the vibrations outside of the head and transfers them to the bone via the skin. In that case, the skin weakens the sound, especially in the high frequencies. To sum up, Bonebridge combines the advantages of transcodaneous systems and direct drive. It directly vibrates the bone and still leaves the skin above the implant intact.