The core activity of Mertenat SA is the manufacture and sale of products in the fields of optics, jewelry and watchmaking. The company offers a wide range of services, including: Optics: sale of glasses, sunglasses, contact lenses and other optical instruments; Jewelry: sale of jewelry, watches and other jewelry products; Watchmaking: sale of watches, jewelry and other watchmaking products. The company also offers various services, such as: eye tests and contact lens fitting; repair and maintenance of watches and jewelry; engraving and pearl setting of jewelry; sale of accessories for watches and jewelry. Since 1966, the company has been active in Delémont and has established itself as a reliable partner for customers seeking high-quality products and services in the fields of optics, jewelry and watchmaking.