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2. Hearing aid - Wikipedia

   en.wikipedia.org/wiki/Hearing_aid

   Within the UK, the NHS provides digital BTE hearing aids to NHS patients, on long-term loan, free of charge. Other than BAHAs (bone anchored hearing aid) or cochlear implants, where specifically required, BTEs are usually the only style available. Private purchases may be necessary if a user desires a different style.

3. The 9 best rechargeable hearing aids, according to hearing ...

   www.aol.com/lifestyle/best-rechargeable-hearing...

   The hearing aid market has advanced by leaps and bounds since the FDA's 2022 regulatory change allowing hearing aids to be sold over the counter. The greatly increased competition between ...

4. These are the best Bluetooth hearing aids of 2024 - AOL

   www.aol.com/lifestyle/best-bluetooth-hearing...

   The cost of hearing aids can vary widely depending on a multitude of factors, such as OTC or prescription, Bluetooth, rechargeable batteries vs replaceable batteries and technology. "OTC hearing ...

5. Bone-anchored hearing aid - Wikipedia

   en.wikipedia.org/wiki/Bone-anchored_hearing_aid

   A bone-anchored hearing aid (BAHA) [2] is a type of hearing aid based on bone conduction. It is primarily suited for people who have conductive hearing losses , unilateral hearing loss , single-sided deafness and people with mixed hearing losses who cannot otherwise wear 'in the ear' or 'behind the ear' hearing aids.

6. Mercury battery - Wikipedia

   en.wikipedia.org/wiki/Mercury_battery

   Mercury batteries were used in the shape of button cells for watches, hearing aids, cameras and calculators, and in larger forms for other applications. For a time during and after World War II, batteries made with mercury became a popular power source for portable electronic devices.

7. Audio induction loop - Wikipedia

   en.wikipedia.org/wiki/Audio_induction_loop

   The cable generates an electromagnetic field throughout the looped space which can be picked up by a telecoil-equipped hearing aid, a cochlear implant (CI) processor, or a specialized hand-held hearing loop receiver for individuals without telecoil-compatible hearing aids. The loops carry baseband audio-frequency currents; no carrier signal is ...