The HF3/HF4 Wax Filters protect your hearing aids from becoming blocked by condensation, earwax, or debris. The HF3/HF4 filters feature an extended, industry-leading usage time that prolongs the need for frequent filter replacements.

Maintain optimal speech clarity and reliability from your hearing aid by replacing the HF3/HF4 black wax guard filters every month, or when your hearing aid is blocked and stops working. Replacing HF3/HF4 wax filters routinely allows the speaker opening of your hearing aid to breathe, reducing the likelihood of repairs caused by built-up condensation trapped inside your hearing aid. 

• Compatible with GN ReSound and Phonak hearing aids 
• Original product in maufacturer-sealed packaging