On Apr. 5, 2011, Siemens, now Sivantos, introduced Aquaris, the world’s first waterproof, dust proof, and shock-resistant digital hearing aid.

The history of electrical hearing assistance instruments originated with technological advances in telephones at the end of the 19th century when Werner von Siemens integrated a horseshoe magnet in the receiver of a telephone, and succeeded in substantially improving transmission quality in the telephone.