Product Features: 1. Easy To Install: HF3 wax guard is designed for easy installation, making it convenient for the elderly or other groups to use. 2. High Quality Material: Made of high quality ABS material, the wax filters ensure long term use without easy damage. 3. Waterproof And Oil Resistant: The wax guard prevents earwax, dust, and other foreign matter from blocking the speaker, thus extending the service life of hearing aids. 4.
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