The versatility of the behind-the-ear hearing aid makes it suitable for any degree of hearing loss. Since they house most components, such as the microphones, amplifier, processor and speaker, in a larger case behind the ear, they have the ability to pack a great deal of power in a small design. Their larger size means the battery life is also much longer than smaller, less noticeable designs, and are super easy to remove and maintain. Another bonus: They come in plenty of design variations and colors.
Of course, the larger design can also have a few downsides. Since they sit outside of the ear, they are prone to picking up more background noise than smaller, in-ear designs. They are also much more visible than other hearing aids on the market. Although, there are plenty of BTE hearing aids with sleek, discreet designs.