4. When buying a hearing aid, consider an after-sales service. Here, after-sales service can be considered for hearing aid failure, hearing aid maintenance, and purchase of spare parts, etc. The debugging aspect may not be considered for the time being.
Hearing aids are medical devices of electronic products, and their initial selection and after-sales after purchase are highly professional.Everyone knows that with glasses, a professional examination of vision is required, and a professional examination of hearing (including air conduction, bone conduction, speech recognition rate, discomfort zone, comfort zone, etc.) is required with hearing aids.However, the situation of matching hearing aids is far more complicated than matching glasses. The hearing loss of human ears at different frequency points is likely to be different. Nowadays, all digital hearing aids can be fine-tuned to hearing aids through a computer and accurately compensated at different frequency points.A hearing aid can usually be used for 5-8 years. During this period, the hearing of the elderly may change. If the hearing changes, it is necessary for professionals to re-adjust the hearing aid in order to make the hearing aid helpful to the elderly.
