What is a common feature of many BTE hearing aids?

A common feature of many behind-the-ear (BTE) hearing aids is their typically larger size compared to in-the-ear (ITE) aids. This size difference arises from the design of BTE devices, which house the main components of the hearing aid in a casing that rests behind the ear while delivering sound into the ear canal through a small tube. The larger size allows BTE hearing aids to contain bigger batteries, which can offer longer operational life, and accommodate more advanced technology such as directional microphones and Bluetooth connectivity.

The other options present various limitations or inaccurate comparisons. For instance, BTE aids can indeed be reconfigured, often allowing audiologists to adjust settings based on individual hearing needs. They also tend to be more powerful compared to ITE aids, making them suitable for a wider range of hearing losses. Additionally, while battery life can vary, BTE aids usually have longer battery lives due to their size, which can hold larger batteries, unlike the implication that they have shorter battery lives.