Streamers allow you to wirelessly link hearing devices to a wide range of sound sources. These can include the TV, telephones and Bluetooth enabled devices such as mobile phones, laptops and tablets. This means you can use your streamer to listen to music, or even have apps such as Google maps give you directions straight into your hearing devices. Most streamers also allow you to make mobile phone calls via the streamer. Many come with a wireless clip-on microphone, effectively turning the streamer into a kind of radio aid, though of a lesser quality.
Streamers are generally worn around the neck or clipped to clothing. Generally streamers only work with hearing devices of the same manufacturer. For example, a Phonak streamer works with Phonak hearing aids.