The moisture meter can quickly measure the moisture content of the grain. 1. The waterproof and oil-resistant filter prevents earwax or water from entering. 2. Extend the life of your hearing aid, specifically tailored for Oticon hearing aids. 3. Protects against earwax and moisture, helps maintain stable performance of hearing aids. 4. Easy to install, convenient to use for the elderly and other hearing impaired. 5. Made from high-quality ABS materials to ensure long-lasting use. Please allow slight dimension error due to manual measurement. Item Type: Pro Wax Hearing Aid Wax Covers Material: ABS Suitable hearing aid: for Oticon How to use: Remove the old hearing aid wax covers with a network remover and clean the horn mouth. Paste the hearing aid wax covers with the other end of the mesh removal tool and insert them into the horn mouth. Gently check with your hand whether it is hard or not Precautions: 1. Often use a small toothbrush to clean the ear hearing aid's anti-wax covers 2. Replace hearing aid earwax shields once every six months to a year, depending on the amount of earwax 3. Make sure the hearing aid covers are securely fastened to avoid falling into the ear canal List of packages: 1 x Hearing Aid Wax Cover Box