They have been used for several years in hearing aids.

He's just had an hearing aids put down for his music.

The last time I did this, he hadn't put in his hearing aids.

And you can add special features to your hearing aids.

At the time, most children did not receive hearing aids until two or three years of age.

Special features can be added to your hearing aids to help you hear even better.

In such a case hearing aids do not make scientific sense.

In the same period, they also began producing hearing aids.

She turned her hearing aids up, and I sat close to the bed, hoping the help wouldn't hear.

Both patients can now hear normal conversation without hearing aids, and even people talking behind them in a public place.