Sonova Holding AG manufactures and sells hearing care solutions for children and adults across Switzerland, the United States, the rest of the Americas, Europe, the Middle East, Africa, and the Asia Pacific. It operates through three segments: Hearing Instruments, Cochlear Implants, and Lifestyle-Aligned. The Hearing Instruments segment designs, develops, manufactures, distributes, and services hearing instruments and related products, including wireless headsets, speech-enhanced hearables, and audiophile headphones under brands such as Phonak, Unitron, Hansaton, and Sennheiser, and provides audiological care services under brands including AudioNova, Audition Santé, Boots Hearingcare, Connect Hearing, Geers, Hansaton, Lapperre, Schoonenberg, and Triton Hearing. The Cochlear Implants segment offers similar activities under the Advanced Bionics brand, while the Lifestyle-Aligned segment designs connected solutions integrating AI and digital capabilities. The company sells directly to consumers through its own store network, wholesales to independent audiologists, third-party retail chains, and multinational and government customers, and provides hearing care services through a network of stores and clinics. Formerly known as Phonak Holding AG, it changed its name to Sonova Holding AG in August 2007, was founded in 1947, and is headquartered in Stäfa, Switzerland.