Rolex participated in the development of the original quartz watch movements. Although Rolex has made very few quartz models for its Oyster line, the company's engineers were instrumental in design and implementation of the technology during the late 1960s and early 1970s. In 1968, Rolex collaborated with a consortium of 16 Swiss watch manufacturers to develop the Beta 21 quartz movement used in their Rolex Quartz Date 5100.[14] Within about five years of research, design, and development, Rolex created the "clean-slate" 5035/5055 movement that would eventually power the Rolex Oysterquartz