It is suitable for the patients with severe or above hearing loss who are in poor economic condition to hear the words and some simple environmental sounds that can hardly be heard. It can help them return from the "silent world" to the "sound world".

Feedback suppression system increases stability, prolongs service life, reinforces moisture-proof and perspiration proof appearance, and lasts longe.

Feedback cancellation system Although eliminating the squealing noise and reducing noise, the auditory sense of the world is clear.