Transparent standard hose between hearing aid & insert.
This is cut to the desired length. The hose is of standard size ø 2.0x3.0mm.
Standard tubing is used between the ear and the BÖ hearing aid.
Due to contact with skin and hair, the hose will eventually turn yellow in color and the plastic hose will become more sensitive.
The tube between the hearing aid and the ear should be changed regularly.