Headband Bone Conduction
Head or Hairband Bone Conduction devices consist of two parts, the microphone and electronic in one and the vibrator in the other, connected with a cable. The big advantage of this technology is, that by separating the vibrator form the rest the chance of mechanical feedback and the need for pressure on the skull is greatly reduced making such systems suitable for children as young as 8 months.
In cases were more power is needed an external vibrator can be connected to a pocket hearing aid. This vibrator is then affixed to a hair band and places in the right position.