Rado

Only the best materials are  approved to produce Rado watches. Hardness alone is not enough; innovation, durability and wearer comfort are just as important. In 1986 Rado pioneered the use of high-tech ceramic, a material which meets all of these desires. Since then high-tech ceramic has played a pivotal role in Rado watches. They are durable and extremely versatile; in shiny metallic and matt finishes of various colours shimmering smooth or ornate surfaces can be created.

Read more at: http://www.rado.com/