Though the technology is great, it also requires a lot of battery power. For this reason, hearing aid manufacturers often make use of devices that connect to the Bluetooth hearing aids to provide extra power. This can be a bit cumbersome This can be a bit cumbersome because it requires the consumer to have to carry an additional device with them, even if it is something that easily fits in a pocket.
Another downside with Bluetooth used in hearing aids is that it is the same frequency used with cordless phones 2.4 GHz. This means that there is only about twenty five to thirty feet of signal strength. This is fine for a person in his or her home, but it means that in public, all hearing aid users making use of Bluetooth have to be providing their own signal, rather than it being transmitted by a public venue such as a theater or church this is something that is easily done with a telecoil. With a telecoil, audio from a movie or a person talking on a stage at a convention can be sent out to every person in the building with hearing assistive devices in their ears. Fortunately, most hearing aids that are Bluetooth-enabled also are telecoil ready, so that the users can take advantage of one at home and another in a public venue.
Bluetooth is exciting and is opening up all new avenues for people with hearing loss to live as normal lives as possible. And, it's sure to adapt and improve even more over the years and decades to come.