Siemens Hearing Instruments is a subsidiary of Siemens Medical Solutions, a division of Siemens AG, Munich, Germany, a leader in the fields of communications, automation & transportation, electronic components, energy power, lighting, as well as medical electronics. Siemens spends over $5.1 billion on research and development annually, ranking it third in R&D investment of all major international corporations. Headquartered in Piscataway, New Jersey, Siemens Hearing Instruments designs, engineers and manufactures state-of-the-art hearing aids that enable those with hearing loss to communicate more easily and improve their quality of life. Siemens is the largest manufacturer of hearing aids in the United States.