Hearing aid S16

Placed behind the ear, without frictional noise. No enhancement of low-frequency reflection in the human body. The volume is relatively large compared to in ear and in ear canal types, and it is possible to use some complex circuits to improve performance or enhance functions, such as installing dual microphones, induction coils, etc. Earback hearing aids are easily blocked by hair and are not easily detected, which to some extent meets the aesthetic requirements of deaf people. The 675 and 13 batteries used in earback hearing aids have a longer lifespan, usually around 7-15 days