Hearing aids are small electronic devices designed to improve hearing for individuals with hearing loss. They amplify sound, making it easier for users to hear conversations and environmental noises. Hearing aids come in various styles and sizes, including behind-the-ear and in-the-ear models, allowing users to choose one that fits their needs and preferences. These devices typically consist of a microphone, amplifier, and speaker. The microphone picks up sound, the amplifier increases its volume, and the speaker delivers the amplified sound into the ear. Many modern hearing aids also include features like noise reduction and Bluetooth connectivity, enhancing the listening experience for users.