mb-microtec AG is a Swiss company primarily known for its watches that use tritium to illuminate the hands and numerals.Established in 1918 by two chemists, Walter Merz and Albert Benteli, Merz & Benteli AG had split to create mb-microtec AG in 1968. Before then, the production of luminous colors were mainly supplied to Swiss watch making industries, and even to renowned scientists such as Marie Curie.