With an open fit hearing aid, the canal is barely covered by a small thin dome that lets in sound naturally while amplifying only the sounds you have difficulty hearing, mainly in the high frequency range. The plugged up sensation is now gone with open fit devices. Due to their small size, open fit hearing aids are cosmetically appealing.
Bluetooth can be used to allow hearing aids to communicate with audio devices such as telephones and television. Bluetooth hearing aids often come with an additional ” streaming” device to allow wireless communication between the device and the hearing aids. Some hearing aids now utilize a different wireless technology that eliminate the need for an additional streaming device and allow direct wireless connectivity