For open fit products (such as micro certena, versata, exelia etc)

Should be renewed when your present domes discolour, slacken or break up, ideally once a month

Please ensure you are sufficiently confident and able to fit these yourself. Consult your hearing professional if in any doubt.

The closed dome has a different design to other
domes. The closed dome consists of two fins overlapping each other. Before inserting the closed dome into the ear canal it is important to check
the position of these fins. The larger fin must be
positioned over the smaller fin, If the position is incorrect, you can easily adjust it. With one finger, gently bend the bigger fin forwards and then back again so that it overlaps the smaller one. Make also sure that the slit of the closed dome is in a horizontal position on the tube unit. Your closed dome is now ready to be inserted into the ear.

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