What kind of hearing aid is Cong Ling?

Acoustic hearing aid is a kind of hearing aid tailored for children. First, install and fix the product on a soft hairband, headband, hat or headband, and then put it on your head. The sound does not need to pass through the outer ear and middle ear, but directly vibrates the skull to the cochlea through the bone conduction vibrator, which is small and light and more convenient for children to wear. If you don't understand, you can continue to ask or Baidu search.