Open dome : Allows low frequency sounds to enter and leave the ear naturally, providing more volume for the missed higher frequency sounds.
Optimal use: It is recommended that the open dome should be replaced every three months. A dome that is worn/feels sticky/loose/not flexible in the course of use is an indication that it needs to be replaced.
Size: The diameter of the base of the dome is measured in millimetres, so you can choose the right size for your needs. (S=6mm M=8mm L=11mm )
Compatible models: For Phonak Audeo & Marvel in-the-ear (RIC) and behind-the-ear (BTE) hearing aids and other hearing aid brands with tiny tubes.