Sirion. Tune into the soundtrack of your life. Siemens created the Sirion™ line of custom hearing aids to bring the music of life to your ears. It helps you focus more clearly on the voices and sounds you long to hear and is so easy to use that you can really concentrate on the moments that matter most – all with a tiny hearing aid made to perfectly and comfortably fit the shape of your individual ear canal. The latest technology adapts to your hearing preferences automatically to create the rich sound quality and clear speech that keeps your conversations going in any situation. Your Hearing Care Professional can help you find the model that best fits your personal needs. Sirion custom hearing aids are simply sensational: The custom fit ensures a high level of wearing comfort Enhanced technology lets your Hearing Care Professional customize the settings to give you individual sound Vent ensures ventilation of the ear for a more open fit Select models include convenient controls for easy adjustments Program change button to switch easily between settings for different listening situations Rotary volume control for spontaneous manual adjustment of volume settings Excellent feedback cancellation prevents bothersome whistling noises